- \n
- \n
\u5b9a\u4e49：\u6a21\u5757\u662f\u4e00\u4e2aPython\u6587\u4ef6，\u6bcf\u4e2a $.py$ \u6587\u4ef6\u5c31\u662f\u4e00\u4e2a\u6a21\u5757\u3002<\/p>\n<\/li>\n
- \n
\u4f5c\u7528：\u7528\u4e8e\u7ec4\u7ec7\u4ee3\u7801，\u907f\u514d\u4ee3\u7801\u91cd\u590d，\u63d0\u9ad8\u590d\u7528\u6027\u3002<\/p>\n<\/li>\n
- \n
\u4f7f\u7528：\u901a\u8fc7 $import$ \u8bed\u53e5\u5bfc\u5165\u6a21\u5757\u4e2d\u7684\u5185\u5bb9\u3002<\/p>\n<\/li>\n<\/ul>\n
1.2 \u5feb\u901f\u4e0a\u624b<\/h4>\n
1.2.1 \u5b9a\u4e49\u6a21\u5757<\/h5>\n
\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a $math_utils.py$ \u7684\u6a21\u5757：<\/p>\n
def add(a, b):
\n \u00a0 \u00a0return a + b
\n\u200b
\ndef subtract(a, b):
\n \u00a0 \u00a0return a – b <\/p>\n1.2.2 \u5bfc\u5165\u6a21\u5757<\/h5>\n
- \n
- \n
\u8bed\u6cd5<\/p>\n<\/li>\n<\/ul>\n
- import \u6a21\u5757\u540d [as \u6a21\u5757\u65b0\u540d\u5b571]\n
\u5bfc\u5165\u4e00\u4e2a\u6a21\u5757\u5230\u5f53\u524d\u7a0b\u5e8f<\/p>\n<\/li>\n
- from \u6a21\u5757\u540d import \u6a21\u5757\u5c5e\u6027\u540d [as \u5c5e\u6027\u65b0\u540d]\n
\u5bfc\u5165\u4e00\u4e2a\u6a21\u5757\u5185\u90e8\u7684\u90e8\u5206\u5c5e\u6027\u5230\u5f53\u524d\u7a0b\u5e8f<\/p>\n<\/li>\n
- from \u6a21\u5757\u540d import *\n
\u5bfc\u5165\u4e00\u4e2a\u6a21\u5757\u5185\u90e8\u7684\u5168\u90e8\u5c5e\u6027\u5230\u5f53\u524d\u7a0b\u5e8f<\/p>\n<\/li>\n
import math_utils
\n\u200b
\nprint(math_utils.add(3, 5)) \u00a0# \u8f93\u51fa: 8
\nprint(math_utils.subtract(10, 4)) \u00a0# \u8f93\u51fa: 6 <\/p>\n\u4e5f\u53ef\u4ee5\u4f7f\u7528 $from … import$ \u5bfc\u5165\u7279\u5b9a\u5185\u5bb9：<\/p>\n
from math_utils import add
\n\u200b
\nprint(add(3, 5)) \u00a0# \u8f93\u51fa: 8 <\/p>\n1.2.3 \u5185\u90e8\u5c5e\u6027<\/h5>\n
__file__ \u00a0\u7ed1\u5b9a\u6a21\u5757\u7684\u8def\u5f84
\n__name__ \u00a0\u7ed1\u5b9a\u6a21\u5757\u7684\u540d\u79f0
\n \u00a0 \u00a0 \u00a0 \u5982\u679c\u662f\u4e3b\u6a21\u5757（\u9996\u5148\u542f\u52a8\u7684\u6a21\u5757）\u5219\u7ed1\u5b9a '__main__'
\n \u00a0 \u00a0 \u00a0 \u5982\u679c\u4e0d\u662f\u4e3b\u6a21\u5757\u5219 \u7ed1\u5b9a xxx.py \u4e2d\u7684 xxx \u8fd9\u4e2a\u6a21\u5757\u540d <\/p>\n1.3 \u6a21\u5757\u5206\u7c7b<\/h4>\n
Python \u7684\u6a21\u5757\u53ef\u4ee5\u5206\u4e3a\u7cfb\u7edf\u6a21\u5757\u3001\u81ea\u5b9a\u4e49\u6a21\u5757\u548c\u7b2c\u4e09\u65b9\u6a21\u5757<\/p>\n
\n1.3.1 \u7cfb\u7edf\u6a21\u5757<\/h5>\n
Pytho\u5185\u7f6e\u7684\u6a21\u5757，\u5b89\u88c5Python\u65f6\u5df2\u5305\u542b，\u63d0\u4f9b\u57fa\u7840\u529f\u80fd，\u6bd4\u5982\u6570\u5b66\u8fd0\u7b97\u3001\u6587\u4ef6\u64cd\u4f5c\u3001\u7f51\u7edc\u901a\u4fe1\u7b49\u3002<\/p>\n
\u7279\u70b9<\/p>\n
- \n
- \n
\u5373\u7528\u5373\u5bfc\u5165：\u76f4\u63a5import\u5373\u53ef\u4f7f\u7528\u3002<\/p>\n<\/li>\n
- \n
\u6027\u80fd\u9ad8\u6548：\u901a\u5e38\u4f7f\u7528 C \u8bed\u8a00\u5b9e\u73b0\u3002<\/p>\n<\/li>\n<\/ul>\n
1.3.1.1 \u5e38\u89c1\u6a21\u5757<\/h6>\n
\n
\u6a21\u5757\u529f\u80fd\u5b98\u65b9\u6587\u6863<\/tr>\n \n\n math<\/td>\n \u6570\u5b66\u8fd0\u7b97<\/td>\n math — \u6570\u5b66\u51fd\u6570 \u2014 Python 3.12.10 \u6587\u6863<\/td>\n<\/tr>\n \n os<\/td>\n \u64cd\u4f5c\u7cfb\u7edf\u63a5\u53e3<\/td>\n os — \u591a\u79cd\u64cd\u4f5c\u7cfb\u7edf\u63a5\u53e3 \u2014 Python 3.13.5 \u6587\u6863<\/td>\n<\/tr>\n \n os.path<\/td>\n \u8def\u5f84\u76f8\u5173<\/td>\n os.path — \u5e38\u7528\u7684\u8def\u5f84\u64cd\u4f5c \u2014 Python 3.13.5 \u6587\u6863<\/td>\n<\/tr>\n \n datetime<\/td>\n \u65e5\u671f\u548c\u65f6\u95f4<\/td>\n datetime — \u57fa\u672c\u65e5\u671f\u548c\u65f6\u95f4\u7c7b\u578b \u2014 Python 3.13.5 \u6587\u6863<\/td>\n<\/tr>\n \n random<\/td>\n \u968f\u673a\u6570\u751f\u6210<\/td>\n random — \u751f\u6210\u4f2a\u968f\u673a\u6570 \u2014 Python 3.13.5 \u6587\u6863<\/td>\n<\/tr>\n \n time<\/td>\n \u65f6\u95f4<\/td>\n time — \u65f6\u95f4\u7684\u8bbf\u95ee\u548c\u8f6c\u6362 \u2014 Python 3.13.5 \u6587\u6863<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 1.3.1.2 \u65b9\u6cd5\u793a\u4f8b<\/h6>\n
random\u6a21\u5757：<\/p>\n
import random
\nrandom.randint(1, 6) \u00a0# random.randint(a,b) \u751f\u4ea7 a~b\u7684\u968f\u673a\u6574\u6570
\nrandom.randint(1, 6)
\nrandom.random() \u00a0 # random.random \u751f\u6210\u5305\u542b0 \u4f46\u4e0d\u5305\u542b1 \u7684\u6d6e\u70b9\u6570
\nrandom.choice("ABCD") \u00a0 \u00a0# \u4ece\u4e00\u4e2a\u5e8f\u5217\u4e2d，\u968f\u673a\u8fd4\u56de\u4e00\u4e2a\u5143\u7d20
\nrandom.choice("ABCD")
\nL = [1, 2, 3, 6, 9]
\nrandom.choice(L)
\nrandom.shuffle(L) \u00a0 # random.shuffer(x) # \u628a\u5217\u8868X \u6253\u4e71
\nprint(L)
\n\u200b <\/p>\n\u968f\u673a\u751f\u6210\u5bc6\u7801：<\/p>\n
import random
\nimport time
\n\u200b
\n\u200b
\n## \u751f\u6210 n \u4f4d\u7684\u6570\u5b57\u5bc6\u7801
\ndef get_random_password(n):
\n \u00a0 \u00a0r_str = ''
\n \u00a0 \u00a0for _ in range(n):
\n \u00a0 \u00a0 \u00a0 \u00a0r_str += str(random.randint(0, 9))
\n \u00a0 \u00a0return r_str
\n\u200b
\n\u200b
\n## \u751f\u6210 n \u4f4d\u7684\u6570\u5b57\u548c\u5b57\u6bcd\u7ec4\u6210\u7684\u5bc6\u7801
\ncharactors = '0123456789abcdefghijklmnopqrstwuxyz'
\n\u200b
\n\u200b
\ndef get_random_password2(n):
\n \u00a0 \u00a0r_str = ''
\n \u00a0 \u00a0for _ in range(n):
\n \u00a0 \u00a0 \u00a0 \u00a0r_str += random.choice(charactors)
\n \u00a0 \u00a0return r_str
\n\u200b
\n\u200b
\nprint(get_random_password(6))
\nprint(get_random_password(6))
\n\u200b
\ntime.sleep(2)
\n\u200b
\nprint(get_random_password2(10)) <\/p>\ntime\u6a21\u5757：<\/p>\n
import time
\n\u200b
\ntime.time() \u00a0# \u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u7684\u65f6\u95f4\u6233
\ntime.ctime() \u00a0#\u8fd4\u56de\u5f53\u524d\u7684UTC \u65f6\u95f4\u7684\u5b57\u7b26\u4e32
\nt1 = time.localtime() \u00a0# \u8fd4\u56de\u5f53\u524d\u7684\u672c\u5730\u65f6\u95f4\u5143\u7ec4
\ntime.sleep(3) \u00a0# \u8ba9\u7a0b\u5e8f\u7761\u7720 n \u79d2
\ntime.strftime("%Y-%m-%d", t1) \u00a0# \u683c\u5f0f\u5316\u65f6\u95f4
\ntime.strftime("%y-%m-%d", t1)
\ntime.strftime('%Y-%m-%d %H:%M:%S', t1) <\/p>\nos\u6a21\u5757：<\/p>\n
# 1. os.getcwd(): \u83b7\u53d6\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55
\nimport os
\ncurrent_directory = os.getcwd()
\nprint("\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55:", current_directory)
\n\u200b
\n# 2. os.chdir(path): \u6539\u53d8\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55
\nnew_directory = "F:\\\\\\\\01.AI07.\u6df1\u5ea6\u5b66\u4e60\u6846\u67b6\\\\\\\\00.\u4e0a\u8bfe\u8bfe\u4ef6"
\nos.chdir(new_directory)
\nprint("\u5de5\u4f5c\u76ee\u5f55\u5df2\u66f4\u6539\u4e3a:", os.getcwd())
\n\u200b
\n# 3. os.listdir(path='.'): \u8fd4\u56de\u6307\u5b9a\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u6587\u4ef6\u548c\u76ee\u5f55\u5217\u8868
\ndirectory_path = "."
\nfiles_and_dirs = os.listdir(directory_path)
\nprint("\u6307\u5b9a\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u5217\u8868:", files_and_dirs)
\n\u200b
\n# 4. os.mkdir(path): \u521b\u5efa\u76ee\u5f55
\nnew_directory = "new_folder"
\nos.mkdir(new_directory)
\nprint(f"\u76ee\u5f55 '{new_directory}' \u5df2\u521b\u5efa")
\n\u200b
\n# 5. os.rmdir(path): \u5220\u9664\u76ee\u5f55
\ndirectory_to_remove = "new_folder"
\nos.rmdir(directory_to_remove)
\nprint(f"\u76ee\u5f55 '{directory_to_remove}' \u5df2\u5220\u9664")
\n\u200b
\n# 6. os.remove(path): \u5220\u9664\u6587\u4ef6
\nfile_to_remove = "example.txt"
\nos.remove(file_to_remove)
\nprint(f"\u6587\u4ef6 '{file_to_remove}' \u5df2\u5220\u9664") <\/p>\n1.3.2 \u7b2c\u4e09\u65b9\u6a21\u5757<\/h5>\n
\u7531\u793e\u533a\u6216\u516c\u53f8\u5f00\u53d1，\u901a\u8fc7\u5305\u7ba1\u7406\u5de5\u5177（\u5982pip ）\u5b89\u88c5，\u7528\u4e8e\u5b9e\u73b0\u66f4\u9ad8\u7ea7\u6216\u66f4\u5177\u4f53\u7684\u529f\u80fd，\u5982\u6570\u636e\u79d1\u5b66\u3001\u56fe\u50cf\u5904\u7406\u3001\u7f51\u7edc\u722c\u866b\u7b49\u3002<\/p>\n
1.3.2.1 \u5e38\u89c1\u6a21\u5757<\/h6>\n
\u90a3\u8fd9\u53ef\u5c31\u592a\u591a\u4e86~\u8fd9\u91cc\u968f\u4fbf\u4e3e\u7684\u4f8b\u5b50<\/p>\n
\n
\u6a21\u5757\u529f\u80fd\u793a\u4f8b<\/tr>\n \n\n numpy<\/td>\n \u6570\u503c\u8ba1\u7b97<\/td>\n \u79d1\u5b66\u8fd0\u7b97\u3001\u77e9\u9635\u64cd\u4f5c<\/td>\n<\/tr>\n \n pandas<\/td>\n \u6570\u636e\u5206\u6790<\/td>\n \u6570\u636e\u6e05\u6d17\u4e0e\u5904\u7406<\/td>\n<\/tr>\n \n matplotlib<\/td>\n \u6570\u636e\u53ef\u89c6\u5316<\/td>\n \u7ed8\u5236\u56fe\u8868<\/td>\n<\/tr>\n \n requests<\/td>\n HTTP\u8bf7\u6c42\u5904\u7406<\/td>\n \u722c\u53d6\u7f51\u9875\u5185\u5bb9，\u8c03\u7528API<\/td>\n<\/tr>\n \n flask<\/td>\n Web\u5e94\u7528\u6846\u67b6<\/td>\n \u5feb\u901f\u642d\u5efaWeb\u670d\u52a1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 1.3.2.2 \u4f7f\u7528\u793a\u4f8b<\/h6>\n
- \n
\u5b89\u88c5\u6a21\u5757：<\/p>\n
pip install numpy pandas requests <\/li>\n
- \n
\u4f7f\u7528：<\/p>\n
# numpy \u6a21\u5757
\nimport numpy as np
\narray = np.array([1, 2, 3])
\nprint(array.mean()) \u00a0# \u8f93\u51fa: \u5e73\u5747\u503c 2.0
\n\u200b
\n# pandas \u6a21\u5757
\nimport pandas as pd
\ndf = pd.DataFrame({"Name": ["Alice", "Bob"], "Age": [25, 30]})
\nprint(df)
\n\u200b
\n# requests \u6a21\u5757
\nimport requests
\nresponse = requests.get("https:\/\/jsonplaceholder.typicode.com\/posts\/1")
\nprint(response.json()) <\/li>\n1.3.3 \u81ea\u5b9a\u4e49\u6a21\u5757<\/h5>\n
- \n
- \n
\u7528\u6237\u81ea\u5df1\u7f16\u5199\u7684\u6a21\u5757，\u7528\u4e8e\u590d\u7528\u4ee3\u7801\u3002<\/p>\n<\/li>\n
- \n
\u6587\u4ef6\u540d\u4ee5 $.py$ \u7ed3\u5c3e，\u5b58\u653e\u81ea\u5b9a\u4e49\u7684\u51fd\u6570\u3001\u7c7b\u7b49\u3002<\/p>\n<\/li>\n<\/ul>\n
1.3.3.1 \u521b\u5efa\u6a21\u5757<\/h6>\n
\u521b\u5efa\u4e00\u4e2autils.py\u6587\u4ef6：<\/p>\n
# utils.py
\ndef add(a, b):
\n \u00a0 \u00a0return a + b
\n\u200b
\ndef greet(name):
\n \u00a0 \u00a0return f"Hello, {name}!" <\/p>\n1.3.3.2 \u4f7f\u7528\u6a21\u5757<\/h6>\n
\u521b\u5efa\u4e00\u4e2amain.py\u6587\u4ef6，\u5e76\u5bfc\u5165\u81ea\u5b9a\u4e49\u6a21\u5757：<\/p>\n
# main.py
\nimport utils
\n\u200b
\nprint(utils.add(3, 5)) \u00a0# \u8f93\u51fa: 8
\nprint(utils.greet("Alice")) \u00a0# \u8f93\u51fa: Hello, Alice! <\/p>\n1.3.3.3 \u8de8\u6587\u4ef6\u5939\u4f7f\u7528<\/h6>\n
\u5047\u8bbe\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b：<\/p>\n
project\/
\n \u00a0 utils\/
\n \u00a0 \u00a0 \u00a0 __init__.py
\n \u00a0 \u00a0 \u00a0 math_utils.py
\n \u00a0 main.py <\/p>\n\u5728main.py\u4e2d：<\/p>\n
from utils.math_utils import add
\n\u200b
\nprint(add(3, 5)) \u00a0# \u8f93\u51fa: 8 <\/p>\n
\n1.3.4 \u603b\u7ed3\u5bf9\u6bd4<\/h5>\n
\n
\u5206\u7c7b\u83b7\u53d6\u65b9\u5f0f\u4f7f\u7528\u573a\u666f\u793a\u4f8b<\/tr>\n \n\n \u7cfb\u7edf\u6a21\u5757<\/td>\n \u968fPython\u81ea\u5e26<\/td>\n \u5e38\u7528\u529f\u80fd，\u6027\u80fd\u9ad8\u6548<\/td>\n math, os, random<\/td>\n<\/tr>\n \n \u7b2c\u4e09\u65b9\u6a21\u5757<\/td>\n pip \u5b89\u88c5<\/td>\n \u9ad8\u7ea7\u529f\u80fd，\u7279\u5b9a\u9886\u57df<\/td>\n numpy, requests<\/td>\n<\/tr>\n \n \u81ea\u5b9a\u4e49\u6a21\u5757<\/td>\n \u81ea\u5df1\u7f16\u5199<\/td>\n \u9879\u76ee\u7279\u5b9a\u9700\u6c42，\u7075\u6d3b\u63a7\u5236<\/td>\n utils.py<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 2. \u5305<\/h3>\n
Package<\/p>\n
2.1 \u57fa\u672c\u6982\u5ff5<\/h4>\n
- \n
- \n
\u5b9a\u4e49：<\/p>\n
- \n
- \n
\u5305\u662f\u5305\u542b\u591a\u4e2a\u6a21\u5757\u7684\u76ee\u5f55\u3002<\/p>\n<\/li>\n
- \n
\u5305\u7684\u672c\u8d28\u662f\u4e00\u4e2a\u5305\u542b $__init__.py$ \u6587\u4ef6\u7684\u6587\u4ef6\u5939\u3002<\/p>\n<\/li>\n
- \n
\u6587\u4ef6 $__init__.py$ \u53ef\u4e3a\u7a7a，\u4e5f\u53ef\u4ee5\u5305\u542b\u521d\u59cb\u5316\u4ee3\u7801\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u4f5c\u7528：\u7528\u4e8e\u7ec4\u7ec7\u6a21\u5757\u7684\u96c6\u5408，\u5f62\u6210\u5c42\u6b21\u5316\u7684\u7ed3\u6784，\u4fbf\u4e8e\u7ba1\u7406\u5927\u578b\u9879\u76ee\u3002<\/p>\n<\/li>\n
- \n
\u7ed3\u6784：<\/p>\n
my_package\/
\n \u00a0 __init__.py
\n \u00a0 module1.py
\n \u00a0 module2.py
\n \u00a0 subpackage\/
\n \u00a0 \u00a0 \u00a0 __init__.py
\n \u00a0 \u00a0 \u00a0 module3.py <\/li>\n<\/ul>\n2.2 \u5bfc\u5165\u5305\u548c\u5b50\u5305<\/h4>\n
- \n
- \n
\u4f7f\u7528import\u5173\u952e\u5b57\u53ef\u4ee5\u5bfc\u5165\u5305\u548c\u5b50\u5305，\u4ee5\u8bbf\u95ee\u5176\u4e2d\u7684\u6a21\u5757\u548c\u5185\u5bb9\u3002<\/p>\n<\/li>\n<\/ul>\n
\u00a0 \u00a0# \u540c\u6a21\u5757\u7684\u5bfc\u5165\u89c4\u5219
\n \u00a0 \u00a0import \u5305\u540d [as \u5305\u522b\u540d]
\n \u00a0 \u00a0import \u00a0\u5305\u540d.\u6a21\u5757\u540d [as \u6a21\u5757\u65b0\u540d]
\n \u00a0 \u00a0import \u00a0\u5305\u540d.\u5b50\u5305\u540d.\u6a21\u5757\u540d [as \u6a21\u5757\u65b0\u540d]
\n \u00a0 \u00a0
\n \u00a0 \u00a0from \u5305\u540d import \u6a21\u5757\u540d [as \u6a21\u5757\u65b0\u540d]
\n \u00a0 \u00a0from \u5305\u540d.\u5b50\u5305\u540d import \u6a21\u5757\u540d [as \u6a21\u5757\u65b0\u540d]
\n \u00a0 \u00a0from \u5305\u540d.\u5b50\u5305\u540d.\u6a21\u5757\u540d import \u5c5e\u6027\u540d [as \u5c5e\u6027\u65b0\u540d]
\n \u00a0 \u00a0
\n \u00a0 \u00a0# \u5bfc\u5165\u5305\u5185\u7684\u6240\u6709\u5b50\u5305\u548c\u6a21\u5757
\n \u00a0 \u00a0from \u5305\u540d import *
\n \u00a0 \u00a0from \u5305\u540d.\u6a21\u5757\u540d import * <\/p>\n\u53c2\u8003\u6848\u4f8b：<\/p>\n
# \u5bfc\u5165\u5305\u4e2d\u7684\u6a21\u5757
\nimport matplotlib.pyplot as plt
\n\u200b
\n# \u5bfc\u5165\u5b50\u5305\u4e2d\u7684\u6a21\u5757
\nfrom sklearn.linear_model import LinearRegression <\/p>\n2.4 __init__.py\u6587\u4ef6<\/h4>\n
__init__.py \u7684\u4f5c\u7528<\/p>\n
- \n
\u6807\u8bc6\u5305：<\/p>\n
- \n
- \n
__init__.py \u6587\u4ef6\u7684\u5b58\u5728\u6807\u5fd7\u7740\u8be5\u76ee\u5f55\u662f\u4e00\u4e2a Python \u5305\u3002<\/p>\n<\/li>\n
- \n
\u5982\u679c\u6ca1\u6709 __init__.py \u6587\u4ef6，Python \u4f1a\u5c06\u76ee\u5f55\u89c6\u4e3a\u666e\u901a\u76ee\u5f55，\u65e0\u6cd5\u901a\u8fc7\u5305\u7684\u65b9\u5f0f\u5bfc\u5165\u5176\u4e2d\u7684\u6a21\u5757\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u521d\u59cb\u5316\u5305：<\/p>\n
- \n
- \n
\u5f53\u5305\u6216\u5305\u4e2d\u7684\u6a21\u5757\u88ab\u5bfc\u5165\u65f6，__init__.py \u6587\u4ef6\u4e2d\u7684\u4ee3\u7801\u4f1a\u81ea\u52a8\u6267\u884c\u3002<\/p>\n<\/li>\n
- \n
\u53ef\u4ee5\u5728\u8fd9\u91cc\u7f16\u5199\u5305\u7684\u521d\u59cb\u5316\u903b\u8f91，\u4f8b\u5982\u8bbe\u7f6e\u5305\u7ea7\u522b\u7684\u53d8\u91cf\u3001\u5bfc\u5165\u5b50\u6a21\u5757\u6216\u6267\u884c\u5176\u4ed6\u521d\u59cb\u5316\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u5b9a\u4e49\u5305\u7684\u63a5\u53e3：<\/p>\n
- \n
- \n
\u53ef\u4ee5\u5728 __init__.py \u4e2d\u5b9a\u4e49 __all__ \u53d8\u91cf，\u660e\u786e\u6307\u5b9a\u901a\u8fc7 from package import * \u5bfc\u5165\u65f6\u54ea\u4e9b\u6a21\u5757\u6216\u5bf9\u8c61\u662f\u516c\u5f00\u7684\u3002<\/p>\n<\/li>\n
- \n
\u4e5f\u53ef\u4ee5\u5728 __init__.py \u4e2d\u5bfc\u5165\u5305\u5185\u7684\u6a21\u5757\u6216\u5b50\u5305，\u7b80\u5316\u7528\u6237\u7684\u5bfc\u5165\u65b9\u5f0f\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u547d\u540d\u7a7a\u95f4\u7ba1\u7406：<\/p>\n
- \n
- \n
__init__.py \u6587\u4ef6\u53ef\u4ee5\u5e2e\u52a9\u7ba1\u7406\u5305\u7684\u547d\u540d\u7a7a\u95f4，\u786e\u4fdd\u5305\u5185\u7684\u6a21\u5757\u548c\u5b50\u5305\u80fd\u591f\u6b63\u786e\u5bfc\u5165\u548c\u4f7f\u7528\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
__all__ \u7684\u4f5c\u7528<\/p>\n
- \n
\u63a7\u5236 from module import \\\\* \u7684\u884c\u4e3a：<\/p>\n
- \n
- \n
\u9ed8\u8ba4\u60c5\u51b5\u4e0b，from module import * \u4f1a\u5bfc\u5165\u6a21\u5757\u4e2d\u6240\u6709\u4e0d\u4ee5 _ \u5f00\u5934\u7684\u5bf9\u8c61\u3002<\/p>\n<\/li>\n
- \n
\u5982\u679c\u5b9a\u4e49\u4e86 __all__，\u5219\u53ea\u6709 __all__ \u4e2d\u5217\u51fa\u7684\u5bf9\u8c61\u4f1a\u88ab\u5bfc\u5165\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u660e\u786e\u516c\u5f00\u63a5\u53e3：<\/p>\n
- \n
- \n
\u901a\u8fc7 __all__，\u5f00\u53d1\u8005\u53ef\u4ee5\u660e\u786e\u544a\u8bc9\u7528\u6237\u54ea\u4e9b\u5bf9\u8c61\u662f\u6a21\u5757\u6216\u5305\u7684\u516c\u5f00\u63a5\u53e3，\u54ea\u4e9b\u662f\u5185\u90e8\u5b9e\u73b0\u7ec6\u8282\u3002<\/p>\n<\/li>\n
- \n
\u8fd9\u662f\u4e00\u79cd\u826f\u597d\u7684\u7f16\u7a0b\u5b9e\u8df5，\u6709\u52a9\u4e8e\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u9632\u6b62\u610f\u5916\u5bfc\u5165：<\/p>\n
- \n
- \n
\u5982\u679c\u6ca1\u6709 __all__，from module import * \u53ef\u80fd\u4f1a\u5bfc\u5165\u4e00\u4e9b\u4e0d\u5e0c\u671b\u66b4\u9732\u7684\u5185\u90e8\u5bf9\u8c61\u3002<\/p>\n<\/li>\n
- \n
\u901a\u8fc7 __all__，\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\u793a\u4f8b1：\u5728 __init__.py \u4e2d\u5b9a\u4e49\u53d8\u91cf<\/p>\n
\u53ef\u4ee5\u5728 __init__.py \u4e2d\u5b9a\u4e49\u5305\u7ea7\u522b\u7684\u53d8\u91cf<\/p>\n
version = "1.0.0" <\/p>\n
\u5728\u5176\u5b83\u6a21\u5757\u4f7f\u7528\u65f6：<\/p>\n
import my_package
\nprint(my_package.version) \u00a0# \u8f93\u51fa: 1.0.0 <\/p>\n\u793a\u4f8b2：\u5728 __init__.py \u4e2d\u5bfc\u5165\u6a21\u5757<\/p>\n
\u53ef\u4ee5\u5728 __init__.py \u4e2d\u5bfc\u5165\u5305\u5185\u7684\u6a21\u5757，\u7b80\u5316\u7528\u6237\u7684\u5bfc\u5165\u65b9\u5f0f<\/p>\n
# __init__.py
\nfrom .module1 import func1
\nfrom .module2 import func2 <\/p>\n\u5728\u5176\u5b83\u6a21\u5757\u4f7f\u7528\u65f6：<\/p>\n
from my_package import func1, func2
\nfunc1()
\nfunc2() <\/p>\n\u793a\u4f8b3：\u4f7f\u7528 __all__ \u5b9a\u4e49\u516c\u5f00\u63a5\u53e3<\/p>\n
\u53ef\u4ee5\u5728 __init__.py \u4e2d\u5b9a\u4e49 __all__，\u660e\u786e\u6307\u5b9a\u901a\u8fc7 from package import * \u5bfc\u5165\u65f6\u54ea\u4e9b\u5bf9\u8c61\u662f\u516c\u5f00\u7684<\/p>\n
# __init__.py
\n__all__ = ["func1", "func2"]
\n\u200b
\nfrom .module1 import func1
\nfrom .module2 import func2 <\/p>\n\u4f7f\u7528\u65f6：<\/p>\n
from my_package import *
\nfunc1()
\nfunc2() <\/p>\n3. \u6a21\u5757\u4e0e\u5305\u7684\u533a\u522b<\/h3>\n
\n
\u6a21\u5757\u5305<\/tr>\n \n\n \u4e00\u4e2aPython\u6587\u4ef6<\/td>\n \u4e00\u4e2a\u5305\u542b__init__.py\u7684\u6587\u4ef6\u5939<\/td>\n<\/tr>\n \n \u63d0\u4f9b\u57fa\u672c\u529f\u80fd\u5355\u5143<\/td>\n \u7528\u4e8e\u7ec4\u7ec7\u591a\u4e2a\u6a21\u5757<\/td>\n<\/tr>\n \n \u6587\u4ef6\u540d\u4e3a.py<\/td>\n \u76ee\u5f55\u540d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e8c\u3001Python\u6587\u4ef6\u64cd\u4f5c<\/h2>\n
\u6587\u4ef6\u64cd\u4f5c\u662fPython\u4e2d\u5e38\u89c1\u7684\u4efb\u52a1\u4e4b\u4e00，\u7528\u4e8e\u521b\u5efa\u3001\u8bfb\u53d6\u3001\u5199\u5165\u548c\u7ba1\u7406\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6587\u4ef6\u64cd\u4f5c\u4efb\u52a1\u7684\u601d\u8def\u3001\u603b\u7ed3\u548c\u793a\u4f8b\u4ee3\u7801：<\/p>\n
1. \u6253\u5f00\u6587\u4ef6<\/h3>\n
\u8981\u6267\u884c\u6587\u4ef6\u64cd\u4f5c，\u9996\u5148\u9700\u8981\u6253\u5f00\u6587\u4ef6\u3002\u4f7f\u7528open()\u51fd\u6570\u53ef\u4ee5\u6253\u5f00\u6587\u4ef6，\u6307\u5b9a\u6587\u4ef6\u540d\u4ee5\u53ca\u6253\u5f00\u6a21\u5f0f（\u8bfb\u53d6\u3001\u5199\u5165\u3001\u8ffd\u52a0\u7b49）\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730113655-688a03d74a6a5.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730113656-688a03d85eeb2.png\")
<\/p>\n2. \u8bfb\u53d6\u6587\u4ef6<\/h3>\n
\u4e00\u65e6\u6587\u4ef6\u88ab\u6253\u5f00，\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u65b9\u6cd5\u6765\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n
# \u6253\u5f00\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u4ee5\u8bfb\u53d6\u5185\u5bb9
\nfile = open("example.txt", "r")
\n# \u8bfb\u53d6\u6574\u4e2a\u6587\u4ef6\u5185\u5bb9
\ncontent = file.read()
\n\u200b
\n# \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9
\nfor line in file: \u00a0#\u76f4\u63a5\u904d\u5386\u6587\u4ef6\u5bf9\u8c61，\u6bcf\u6b21\u8bfb\u53d6\u4e00\u884c\u3002\u8fd9\u79cd\u65b9\u5f0f\u66f4\u5185\u5b58\u53cb\u597d，\u56e0\u4e3a\u4e0d\u9700\u8981\u5c06\u6240\u6709\u884c\u8bfb\u5165\u5185\u5b58\u3002
\n \u00a0 \u00a0print(line)
\nwith open('example.txt', 'r') as file:
\n \u00a0 \u00a0lines = file.readlines() # \u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c，\u5e76\u5c06\u5176\u4f5c\u4e3a\u4e00\u4e2a\u5217\u8868\u8fd4\u56de\u3002
\n \u00a0 \u00a0for line in lines:
\n \u00a0 \u00a0 \u00a0 \u00a0print(line, end='') \u4ee3\u7801\u548cfile = open("example.txt", "r")for line in file:
\n \u00a0 \u00a0print(line) \u4ee3\u7801\u7684\u533a\u522b <\/p>\n3. \u5199\u5165\u6587\u4ef6<\/h3>\n
\u8981\u5199\u5165\u6587\u4ef6，\u9700\u8981\u6253\u5f00\u6587\u4ef6\u4ee5\u5199\u5165\u6a21\u5f0f（'w'），\u7136\u540e\u4f7f\u7528write()\u65b9\u6cd5\u3002<\/p>\n
# \u6253\u5f00\u6587\u4ef6\u4ee5\u5199\u5165\u5185\u5bb9
\nfile = open("example.txt", "w")
\n\u200b
\n# \u5199\u5165\u5185\u5bb9
\nfile.write("\u8fd9\u662f\u4e00\u4e2a\u793a\u4f8b\u6587\u672c\u3002") <\/p>\n4. \u5173\u95ed\u6587\u4ef6<\/h3>\n
\u5b8c\u6210\u6587\u4ef6\u64cd\u4f5c\u540e，\u5e94\u8be5\u5173\u95ed\u6587\u4ef6，\u4ee5\u91ca\u653e\u8d44\u6e90\u548c\u786e\u4fdd\u6587\u4ef6\u7684\u5b8c\u6574\u6027\u3002<\/p>\n
file.close() <\/p>\n
5. \u4f7f\u7528with<\/h3>\n
\u66f4\u5b89\u5168\u7684\u65b9\u6cd5\u662f\u4f7f\u7528with\u8bed\u53e5，\u5b83\u4f1a\u81ea\u52a8\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n
with open("example.txt", "r") as file:
\n \u00a0 \u00a0content = file.read()
\n \u00a0 \u00a0# \u6587\u4ef6\u81ea\u52a8\u5173\u95ed <\/p>\n6. \u68c0\u67e5\u662f\u5426\u5b58\u5728<\/h3>\n
\u53ef\u4ee5\u4f7f\u7528os.path.exists()\u6765\u68c0\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728\u3002<\/p>\n
import os
\nif os.path.exists("example.txt"):
\n \u00a0 \u00a0print("\u6587\u4ef6\u5b58\u5728") <\/p>\n\u4e09\u3001\u6b63\u5219\u8868\u8fbe\u5f0f<\/h2>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u5b57\u7b26\u5e8f\u5217，\u5b83\u80fd\u5e2e\u52a9\u4f60\u65b9\u4fbf\u7684\u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e0e\u67d0\u79cd\u6a21\u5f0f\u5339\u914d\u3002re\u6a21\u5757\u4f7fPython\u62e5\u6709\u6b63\u5219\u8868\u8fbe\u5f0f\u529f\u80fd\u3002<\/p>\n
1. \u5b57\u7b26\u5339\u914d<\/h3>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u5728\u7f51\u7edc\u722c\u866b\u3001\u6570\u636e\u5206\u6790\u4e2d\u6709\u7740\u5e7f\u6cdb\u4f7f\u7528，\u638c\u63e1\u6b63\u5219\u8868\u8fbe\u5f0f\u80fd\u591f\u8fbe\u5230\u4e8b\u534a\u529f\u500d\u7684\u6548\u679c\u3002<\/p>\n
1.1 \u65b9\u6cd5\u548c\u529f\u80fd<\/h4>\n
\n
\u65b9\u6cd5\u529f\u80fd<\/tr>\n \n\n match()<\/td>\n \u5224\u65ad\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5426\u4ece\u5f00\u59cb\u5904\u5339\u914d\u4e00\u4e2a\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n \n search()<\/td>\n \u904d\u5386\u5b57\u7b26\u4e32，\u627e\u5230\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e，\u8fd4\u56de\u5339\u914d\u5bf9\u8c61<\/td>\n<\/tr>\n \n findall()<\/td>\n \u904d\u5386\u5b57\u7b26\u4e32，\u627e\u5230\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7684\u6240\u6709\u4f4d\u7f6e，\u5e76\u4ee5\u5217\u8868\u7684\u5f62\u5f0f\u8fd4\u56de\u3002\u5982\u679c\u7ed9\u51fa\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u5305\u542b\u5b50\u7ec4，\u5c31\u4f1a\u628a\u5b50\u7ec4\u7684\u5185\u5bb9\u5355\u72ec\u8fd4\u56de，\u5982\u679c\u6709\u591a\u4e2a\u5b50\u7ec4\u5c31\u4f1a\u4ee5\u5143\u7ec4\u7684\u5f62\u5f0f\u8fd4\u56de\u3002<\/td>\n<\/tr>\n \n finditer()<\/td>\n \u904d\u5386\u5b57\u7b26\u4e32，\u627e\u5230\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7684\u6240\u6709\u4f4d\u7f6e，\u5e76\u4ee5\u8fed\u4ee3\u5668\u7684\u5f62\u5f0f\u8fd4\u56de<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n - \n
- \n
hqyj\u5339\u914d\u6587\u672c\u4e2d\u7684hqyj<\/p>\n<\/li>\n<\/ul>\n
import re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08\u4e5f\u725b\u76ae666"
\ndata=re.findall("hqyj",text)
\nprint(data)#['hqyj', 'hqyj'] <\/p>\n- \n
- \n
[hqyj]\u5339\u914dh\u6216\u8005q\u6216\u8005y\u6216\u8005j\u5b57\u7b26<\/p>\n<\/li>\n<\/ul>\n
import re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08\u4e5f\u725b\u76ae666"
\ndata=re.findall("[hqyj]",text)
\nprint(data)#['h', 'q', 'y', 'j', 'h', 'q', 'y', 'j']
\nimport re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08\u4e5f\u725b\u76ae666"
\ndata=re.findall("[hqyj]\u725b",text)
\nprint(data)#['j\u725b'] <\/p>\n- \n
- \n
[^hqyj]\u5339\u914d\u9664\u4e86hqyj\u4ee5\u5916\u7684\u5176\u4ed6\u5b57\u7b26<\/p>\n<\/li>\n<\/ul>\n
import re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08\u4e5f\u725b\u76ae666"
\ndata=re.findall("[^hqyj]",text)
\nprint(data)#['\u725b', '\u76ae', '6', '6', '6', '6', ',', '\u6709', '\u4e2a', '\u8001', '\u5e08', '\u4e5f', '\u725b', '\u76ae', '6', '6', '6']
\n\u200b <\/p>\n- \n
- \n
[a-z]\u5339\u914da~z\u7684\u4efb\u610f\u5b57\u7b26([0-9]\u4e5f\u53ef\u4ee5)<\/p>\n<\/li>\n<\/ul>\n
import re
\n\u200b
\ntext = "hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08abchqyj\u4e5f\u725b\u76ae666"
\ndata = re.findall("[a-z]hqyj", text)
\nprint(data) \u00a0# ['chqyj'] <\/p>\n- \n
- \n
.\u5339\u914d\u9664\u4e86\u6362\u884c\u7b26\u4ee5\u5916\u7684\u4efb\u610f\u5b57\u7b26<\/p>\n<\/li>\n<\/ul>\n
import re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08abchqyj\u4e5f\u725b\u76ae666"
\ndata=re.findall(".hqyj",text)
\nprint(data)#[',hqyj', 'chqyj']
\nimport re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08abchqyj\u4e5f\u725b\u76ae666"
\ndata=re.findall(".+hqyj",text) #\u8d2a\u5a6a\u5339\u914d(\u5339\u914d\u6700\u957f\u7684)
\nprint(data)#['hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08abchqyj']
\nimport re
\ntext="hqyj\u725b\u76ae6666,hqyj\u6709\u4e2a\u8001\u5e08abchqyj\u4e5f\u725b\u76ae666"
\ndata=re.findall(".?hqyj",text)
\nprint(data)#['hqyj', ',hqyj', 'chqyj'] <\/p>\n1.2 \u7279\u6b8a\u5b57\u7b26<\/h4>\n
\n
\u7279\u6b8a\u5b57\u7b26\u542b\u4e49<\/tr>\n \n\n \\\\d<\/td>\n \u5339\u914d\u4efb\u4f55\u5341\u8fdb\u5236\u6570\u5b57；\u76f8\u5f53\u4e8e\u7c7b [0-9]<\/td>\n<\/tr>\n \n \\\\D<\/td>\n \u4e0e \\\\d \u76f8\u53cd，\u5339\u914d\u4efb\u4f55\u975e\u5341\u8fdb\u5236\u6570\u5b57\u7684\u5b57\u7b26；\u76f8\u5f53\u4e8e\u7c7b 0-9<\/td>\n<\/tr>\n \n \\\\s<\/td>\n \u5339\u914d\u4efb\u4f55\u7a7a\u767d\u5b57\u7b26（\u5305\u542b\u7a7a\u683c\u3001\u6362\u884c\u7b26\u3001\u5236\u8868\u7b26\u7b49）；\u76f8\u5f53\u4e8e\u7c7b [ \\\\t\\\\n\\\\r\\\\f\\\\v]<\/td>\n<\/tr>\n \n \\\\S<\/td>\n \u4e0e \\\\s \u76f8\u53cd，\u5339\u914d\u4efb\u4f55\u975e\u7a7a\u767d\u5b57\u7b26；\u76f8\u5f53\u4e8e\u7c7b \\\\t\\\\n\\\\r\\\\f\\\\v<\/td>\n<\/tr>\n \n \\\\w<\/td>\n \u5339\u914d\u4efb\u610f\u4e00\u4e2a\u6587\u5b57\u5b57\u7b26，\u5305\u62ec\u5927\u5c0f\u5199\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf，\u7b49\u4ef7\u4e8e\u8868\u8fbe\u5f0f[a-zA-Z0-9_]<\/td>\n<\/tr>\n \n \\\\W<\/td>\n \u4e8e \\\\w \u76f8\u53cd (\u6ce8：re.ASCII \u6807\u5fd7\u4f7f\u5f97 \\\\w \u53ea\u80fd\u5339\u914d ASCII \u5b57\u7b26)<\/td>\n<\/tr>\n \n \\\\b<\/td>\n \u5339\u914d\u5355\u8bcd\u7684\u5f00\u59cb\u6216\u7ed3\u675f<\/td>\n<\/tr>\n \n \\\\B<\/td>\n \u4e0e \\\\b \u76f8\u53cd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n - \n
- \n
\\\\w \u5339\u914d\u5b57\u6bcd\u6570\u5b57\u4e0b\u5212\u7ebf(\u6c49\u5b57)<\/p>\n<\/li>\n<\/ul>\n
import re
\n\u200b
\ntext = "\u534e\u6e05_\u8fdc\u89c1abc \u534e\u6e05hqyj\u8fdc\u89c1 \u534e\u6e05\u725b\u76ae\u8fdc\u89c1"
\ndata = re.findall(r"\u534e\u6e05\\\\w+\u8fdc\u89c1", text)
\nprint(data) \u00a0# ['\u534e\u6e05_\u8fdc\u89c1', '\u534e\u6e05hqyj\u8fdc\u89c1', '\u534e\u6e05\u725b\u76ae\u8fdc\u89c1'] <\/p>\n- \n
- \n
\\\\d\u5339\u914d\u6570\u5b57<\/p>\n<\/li>\n<\/ul>\n
import re
\n\u200b
\ntext = "hqyj66d6 a1h43d3fd43s43d4 "
\ndata = re.findall(r"d\\\\d", text) \u00a0# \u53ea\u5339\u914d\u4e00\u4e2a\u6570\u5b57
\nprint(data) \u00a0# ['d6', 'd3', 'd4', 'd4']
\nimport re
\n\u200b
\ntext = "hqyj66d6 a1h43d3fd43s43d4 "
\ndata = re.findall(r"d\\\\d+", text)
\nprint(data) \u00a0# ['d6', 'd3', 'd43', 'd4'] <\/p>\n- \n
- \n
\\\\s\u5339\u914d\u4efb\u610f\u7a7a\u767d\u7b26 \u5305\u62ec\u7a7a\u683c,\u5236\u8868\u7b26\u7b49\u7b49<\/p>\n<\/li>\n<\/ul>\n
import re
\n\u200b
\ntext = "hqyj666 jack karen 666"
\ndata = re.findall(r"\\\\sj\\\\w+\\\\s", text)
\nprint(data) \u00a0# [' jack '] <\/p>\n2. \u6570\u91cf\u63a7\u5236<\/h3>\n
\u63a7\u5236\u5339\u914d\u89c4\u5219\u7684\u91cd\u590d\u6b21\u6570~<\/p>\n
2.1 *\u91cd\u590d0\u6b21\u6216\u591a\u6b21<\/h4>\n
import re
\ntext="\u534e\u6e05\u8fdc\u89c1 \u534e\u6e05666\u8fdc\u89c1"
\ndata=re.findall("\u534e\u6e056*\u8fdc\u89c1",text)
\nprint(data)#['\u534e\u6e05\u8fdc\u89c1', '\u534e\u6e05666\u8fdc\u89c1'] <\/p>\n2.2 +\u91cd\u590d1\u6b21\u6216\u591a\u6b21<\/h4>\n
import re
\ntext="\u534e\u6e05\u8fdc\u89c1 \u534e\u6e05666\u8fdc\u89c1 \u534e\u6e056\u8fdc\u89c1"
\ndata=re.findall("\u534e\u6e056+\u8fdc\u89c1",text)
\nprint(data)#['\u534e\u6e05666\u8fdc\u89c1', '\u534e\u6e056\u8fdc\u89c1'] <\/p>\n2.3 ?\u91cd\u590d1\u6b21\u62160\u6b21<\/h4>\n
import re
\ntext="\u534e\u6e05\u8fdc\u89c1 \u534e\u6e05666\u8fdc\u89c1 \u534e\u6e056\u8fdc\u89c1"
\ndata=re.findall("\u534e\u6e056?\u8fdc\u89c1",text)
\nprint(data)#['\u534e\u6e05\u8fdc\u89c1', '\u534e\u6e056\u8fdc\u89c1'] <\/p>\n2.4 {n}\u91cd\u590dn\u6b21<\/h4>\n
import re
\ntext="\u534e\u6e05\u8fdc\u89c1 \u534e\u6e05666\u8fdc\u89c1 \u534e\u6e056\u8fdc\u89c1"
\ndata=re.findall("\u534e\u6e056{3}\u8fdc\u89c1",text)
\nprint(data)#['\u534e\u6e05666\u8fdc\u89c1'] <\/p>\n2.5 {n,}\u91cd\u590dn\u6b21\u6216\u591a\u6b21<\/h4>\n
import re
\ntext="\u534e\u6e05\u8fdc\u89c1 \u534e\u6e05666\u8fdc\u89c1 \u534e\u6e056\u8fdc\u89c1 \u534e\u6e0566\u8fdc\u89c1"
\ndata=re.findall("\u534e\u6e056{2,}\u8fdc\u89c1",text)
\nprint(data)#['\u534e\u6e05666\u8fdc\u89c1', '\u534e\u6e0566\u8fdc\u89c1'] <\/p>\n2.6 {n,m}\u91cd\u590dn\u5230m\u6b21<\/h4>\n
import re
\ntext="\u534e\u6e05\u8fdc\u89c1 \u534e\u6e05666\u8fdc\u89c1 \u534e\u6e056\u8fdc\u89c1 \u534e\u6e0566\u8fdc\u89c1"
\ndata=re.findall("\u534e\u6e056{0,2}\u8fdc\u89c1",text)
\nprint(data)#['\u534e\u6e05\u8fdc\u89c1', '\u534e\u6e056\u8fdc\u89c1', '\u534e\u6e0566\u8fdc\u89c1'] <\/p>\n3. \u5206\u7ec4<\/h3>\n
- \n
- \n
()\u63d0\u53d6\u5174\u8da3\u533a\u57df<\/p>\n<\/li>\n<\/ul>\n
import re
\n\u200b
\ntext = "\u8c22\u5e1d\u8c22\u5e1d,\u6211\u8981\u8fea\u58eb\u5c3c,\u6211\u7684\u7535\u8bdd\u53f7\u780118282832341,qq\u53f7\u78011817696843"
\ndata = re.findall(r"\u53f7\u7801(\\\\d{10,})", text)
\nprint(data) \u00a0# ['18282832341', '1817696843']
\nimport re
\n\u200b
\ntext = "\u8c22\u5e1d\u8c22\u5e1d,\u6211\u8981\u8fea\u58eb\u5c3c,\u6211\u7684\u7535\u8bdd\u53f7\u780118282832341,qq\u53f7\u78011817696843"
\ndata = re.findall(r"(\\\\w{2}\u53f7\u7801(\\\\d{10,}))", text)
\nprint(data) \u00a0# ['18282832341', '1817696843'] <\/p>\n- \n
- \n
(|)\u63d0\u53d6\u5174\u8da3\u533a\u57df(| = or)<\/p>\n<\/li>\n<\/ul>\n
import re
\n\u200b
\ntext = "\u7b2c\u4e00\u540d\u5f20\u4e09 \u7b2c\u4e00\u540d\u7269\u7406149\u5206 \u7b2c\u4e00\u540d\u6570\u5b66150\u5206 \u7b2c\u4e00\u540d\u82f1\u8bed148\u5206 \u7b2c\u4e00\u540d\u603b\u5206740\u5206"
\ndata = re.findall(r"\u7b2c\u4e00\u540d(\\\\w{2,}|\\\\w{2,}\\\\d{2,}\u5206)", text)
\nprint(data) \u00a0# ['\u5f20\u4e09', '\u7269\u7406149\u5206', '\u6570\u5b66150\u5206', '\u82f1\u8bed148\u5206', '\u603b\u5206740\u5206'] <\/p>\n4. \u5f00\u59cb\u548c\u7ed3\u675f<\/h3>\n
- \n
- \n
^\u5f00\u59cb<\/p>\n<\/li>\n<\/ul>\n
import re
\ntext = "hqyj66abc hqyj123"
\ndata = re.findall(r"^hqyj\\\\d+", text)
\nprint(data) \u00a0# ['hqyj66'] <\/p>\n- \n
- \n
$\u7ed3\u5c3e<\/p>\n<\/li>\n<\/ul>\n
import re
\ntext = "hqyj66abc hqyj123"
\ndata = re.findall(r"hqyj\\\\d+$", text)
\nprint(data) \u00a0# ['hqyj123'] <\/p>\n5. \u7279\u6b8a\u5b57\u7b26<\/h3>\n
\u7531\u4e8e\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d* . \\\\ {} () \u7b49\u7b49\u7b26\u53f7\u5177\u6709\u7279\u6b8a\u542b\u4e49,\u5982\u679c\u4f60\u6307\u5b9a\u7684\u5b57\u7b26\u6b63\u597d\u5c31\u662f\u8fd9\u4e9b\u7b26\u53f7,\u9700\u8981\u7528\\\\\u8fdb\u884c\u8f6c\u4e49<\/p>\n
import re
\ntext = "\u6570\u5b66\u4e2d\u96c6\u5408\u7684\u5199\u6cd5\u662f{2}"
\ndata = re.findall(r"\\\\{2\\\\}", text)
\nprint(data) \u00a0# ['{2}'] <\/p>\n6. \u5e38\u7528\u65b9\u6cd5<\/h3>\n
6.1 re.findall<\/h4>\n
\u83b7\u53d6\u5339\u914d\u5230\u7684\u6240\u6709\u6570\u636e<\/p>\n
import re
\ntext="hqyj66d6 a1h43d3fd43s43d4 "
\ndata=re.findall("d\\\\d+",text)
\nprint(data)#['d6', 'd3', 'd43', 'd4'] <\/p>\n6.2 re.match<\/h4>\n
\u4ece\u5b57\u7b26\u4e32\u7684\u8d77\u59cb\u4f4d\u7f6e\u5339\u914d，\u6210\u529f\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u5426\u5219\u8fd4\u56denone\u3002<\/p>\n
\u5339\u914d\u6210\u529f\u8fd4\u56de\u5bf9\u8c61,\u5bf9\u8c61\u7684\u65b9\u6cd5:<\/p>\n
\n
\u65b9\u6cd5\u529f\u80fd<\/tr>\n \n\n group()<\/td>\n \u8fd4\u56de\u5339\u914d\u7684\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n \n start()<\/td>\n \u8fd4\u56de\u5339\u914d\u7684\u5f00\u59cb\u4f4d\u7f6e<\/td>\n<\/tr>\n \n end()<\/td>\n \u8fd4\u56de\u5339\u914d\u7684\u7ed3\u675f\u4f4d\u7f6e<\/td>\n<\/tr>\n \n span()<\/td>\n \u8fd4\u56de\u4e00\u4e2a\u5143\u7ec4\u8868\u793a\u5339\u914d\u4f4d\u7f6e（\u5f00\u59cb，\u7ed3\u675f）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n import re
\n\u200b
\n# \u5728\u8d77\u59cb\u4f4d\u7f6e\u5339\u914d，\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u5339\u914d (\u5f00\u59cb,\u7ed3\u675f) \u7684\u4f4d\u7f6e\u7684\u5143\u7ec4
\nprint(re.match('www', "www.python.com").span()) \u00a0 \u00a0 # (0, 3)
\nprint(re.match('www', "www.python.com").start()) \u00a0 \u00a0# 0
\nprint(re.match('www', "www.python.com").end()) \u00a0 \u00a0 \u00a0# 3
\n# \u4e0d\u5728\u8d77\u59cb\u4f4d\u7f6e\u5339\u914d
\nprint(re.match('com', "www.python.com")) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0# None <\/p>\n6.3 re.search<\/h4>\n
\u626b\u63cf\u6574\u4e2a\u5b57\u7b26\u4e32\u5e76\u8fd4\u56de\u7b2c\u4e00\u4e2a\u6210\u529f\u5339\u914d\u7684\u5b57\u7b26\u4e32\u3002\u6210\u529f\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u5426\u5219\u8fd4\u56denone<\/p>\n
import re
\n\u200b
\n# \u5728\u8d77\u59cb\u4f4d\u7f6e\u5339\u914d
\nprint(re.search('www', 'www.hqyj.com').span()) \u00a0# (0, 3)
\n# \u4e0d\u5728\u8d77\u59cb\u4f4d\u7f6e\u5339\u914d
\nprint(re.search('com', 'www.hqyj.com').span()) \u00a0# (9, 12) <\/p>\n6.4 re.sub<\/h4>\n
\u66ff\u6362\u5339\u914d\u6210\u529f\u7684\u5b57\u7b26<\/p>\n
\u7c7b\u4f3c\u4e0e\u5b57\u7b26\u4e32\u7684replace\u51fd\u6570<\/p>\n
import re
\n\u200b
\ntext = "\u4ee5\u524d\u534e\u6e05\u8fdc\u89c1\u5728\u56db\u5ddd\u5927\u5b66\u65c1\u8fb9,\u73b0\u5728\u534e\u6e05\u8fdc\u89c1\u5728\u897f\u5357\u4ea4\u5927\u65c1\u8fb9"
\ndata = re.sub("\u534e\u6e05\u8fdc\u89c1", "\u5317\u4eac\u534e\u6e05\u8fdc\u89c1\u79d1\u6280\u96c6\u56e2\u6210\u90fd\u4e2d\u5fc3", text)
\nprint(data) \u00a0# \u4ee5\u524d\u5317\u4eac\u534e\u6e05\u8fdc\u89c1\u79d1\u6280\u96c6\u56e2\u6210\u90fd\u4e2d\u5fc3\u5728\u56db\u5ddd\u5927\u5b66\u65c1\u8fb9,\u73b0\u5728\u5317\u4eac\u534e\u6e05\u8fdc\u89c1\u79d1\u6280\u96c6\u56e2\u6210\u90fd\u4e2d\u5fc3\u5728\u897f\u5357\u4ea4\u5927\u65c1\u8fb9 <\/p>\n6.5 re.split<\/h4>\n
\u6839\u636e\u5339\u914d\u6210\u529f\u7684\u4f4d\u7f6e\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u5206\u5272<\/p>\n
import re
\n\u200b
\ntext = "python is \u00a0 very easy"
\ndata = re.split(r"\\\\s{1,}", text)
\nprint(data) \u00a0# ['python', 'is', 'very', 'easy'] <\/p>\ndd6.6 re.finditer<\/h4>\n
\u7c7b\u4f3cfindall \u4f46\u662f\u4e0d\u4f1a\u5168\u90e8\u8fd4\u56de\u51fa\u6765 \u800c\u662f\u8fd4\u56de\u8fed\u4ee3\u5668(\u6bd4\u5982\u5339\u914d\u6210\u529f\u4e8610\u4e07\u4e2a \u5168\u90e8\u8fd4\u56de\u5c31\u5f88\u5403\u5185\u5b58\u4e86)<\/p>\n
import re
\n\u200b
\ntext = "python is \u00a0 very easy"
\ndata = re.findall(r"\\\\w+", text)
\nprint(data) \u00a0# ['python', 'is', 'very', 'easy']
\nimport re
\n\u200b
\ntext = "python is \u00a0 very easy"
\ndata = re.finditer(r"\\\\w+", text)
\nprint(data)
\nfor el in data:
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