\n| a<\/td>\n | append \u8ffd\u52a0<\/td>\n | \u6587\u4ef6\u4e0d\u5b58\u5728\u81ea\u52a8\u521b\u5efa；\u5149\u6807\u5728\u672b\u5c3e，\u539f\u6709\u5185\u5bb9\u4fdd\u7559<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u62d3\u5c55\u5e26+\/b：<\/p>\n \n- r+\/w+\/a+：\u53ef\u8bfb\u53ef\u5199，\u533a\u522b\u4ec5\u5728\u6587\u4ef6\u5149\u6807\u4f4d\u7f6e<\/li>\n
- rb\/wb\/ab：\u4e8c\u8fdb\u5236\u6a21\u5f0f，\u8bfb\u5199\u56fe\u7247\u3001\u89c6\u9891\u7b49\u975e\u6587\u672c\u6587\u4ef6<\/li>\n<\/ul>\n
3.4 \u6587\u4ef6\u5199\u5165\u6848\u4f8b w \u6a21\u5f0f<\/h4>\n# \u5199\u5165\u6587\u672c，utf-8\u9632\u6b62\u4e2d\u6587\u4e71\u7801
\nf = open(".\/data\/a.txt", "w", encoding="utf-8")
\nf.write("\u4eba\u751f\u82e6\u77ed，\u6211\u8981\u5b66Python")
\nf.close()<\/p>\n 3.5 \u6587\u4ef6\u8bfb\u53d6\u4e09\u5927\u65b9\u6cd5<\/h4>\n1）read() \/ read(size)<\/h5>\n\u4e00\u6b21\u6027\u8bfb\u53d6\u5168\u90e8\u5185\u5bb9，size \u6307\u5b9a\u8bfb\u53d6\u5b57\u7b26\u957f\u5ea6，\u9002\u5408\u5c0f\u6587\u4ef6<\/p>\n f = open(".\/data\/a.txt", "r", encoding="utf-8")
\n# \u8bfb\u53d6\u5168\u90e8
\ncontent = f.read()
\nprint(content)<\/p>\n # \u5206\u6bb5\u5faa\u73af\u8bfb\u53d6，\u907f\u514d\u5927\u6587\u4ef6\u5185\u5b58\u6ea2\u51fa
\nwhile True:
\n data = f.read(10)
\n if not data:
\n break
\n print(data, end="")
\nf.close()<\/p>\n 2）readlines()<\/h5>\n\u4e00\u6b21\u6027\u8bfb\u53d6\u6240\u6709\u884c，\u8fd4\u56de\u5217\u8868，\u6bcf\u884c\u4f5c\u4e3a\u5217\u8868\u5143\u7d20<\/p>\n f = open(".\/data\/124.txt", "r", encoding="utf-8")
\nline_list = f.readlines()
\nfor line in line_list:
\n print(line, end="")
\nf.close()<\/p>\n 3）readline()<\/h5>\n\u5355\u6b21\u8bfb\u53d6\u4e00\u884c，\u5faa\u73af\u8bfb\u53d6\u9002\u5408\u8d85\u5927\u6587\u4ef6<\/p>\n f = open(".\/data\/124.txt", "r", encoding="utf-8")
\nwhile True:
\n line = f.readline()
\n if not line:
\n break
\n print(line, end="")
\nf.close()<\/p>\n \u56db\u3001with open \u81ea\u52a8\u7ba1\u7406\u6587\u4ef6（\u63a8\u8350\u5199\u6cd5）<\/h3>\n4.1 \u4f18\u52bf<\/h4>\n\u65e0\u9700\u624b\u52a8\u8c03\u7528close()，\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u81ea\u52a8\u5173\u95ed\u6587\u4ef6\u3001\u91ca\u653e\u8d44\u6e90，\u907f\u514d\u5fd8\u8bb0\u5173\u95ed\u5bfc\u81f4\u6587\u4ef6\u5360\u7528\u3002<\/p>\n 4.2 \u8bed\u6cd5<\/h4>\nwith open(\u8def\u5f84, \u6a21\u5f0f, encoding="utf-8") as \u6587\u4ef6\u522b\u540d:
\n \u8bfb\u5199\u64cd\u4f5c\u4ee3\u7801<\/p>\n 4.3 \u5b9e\u6218\u6848\u4f8b<\/h4>\n\u6848\u4f8b 1：\u6587\u4ef6\u5185\u5bb9\u6309\u884c\u53cd\u8f6c\u5199\u5165\u65b0\u6587\u4ef6<\/h5>\n# a.txt\u6bcf\u884c\u53cd\u8f6c\u5b58\u5165b.txt
\nwith open(".\/data\/1.txt", "r", encoding="utf-8") as read_f, open(".\/data\/2.txt", "w", encoding="utf-8") as write_f:
\n while True:
\n line = read_f.readline()
\n if not line:
\n break
\n line = line.replace("\\\\n", "")
\n reverse_line = line[::-1]
\n write_f.write(reverse_line + "\\\\n")<\/p>\n \u6848\u4f8b 2：\u6587\u4ef6\u62f7\u8d1d（\u6587\u672c\u6587\u4ef6）<\/h5>\n# \u590d\u5236a.txt \u5907\u4efd\u4e3a a[\u5907\u4efd].txt
\nwith open(".\/data\/a.txt", "r", encoding="utf-8") as r_f, open(".\/data\/a[\u5907\u4efd].txt", "w", encoding="utf-8") as w_f:
\n content = r_f.read()
\n w_f.write(content)<\/p>\n \u6848\u4f8b 3：\u4e8c\u8fdb\u5236\u6587\u4ef6\u62f7\u8d1d（\u89c6\u9891 \/ \u56fe\u7247）<\/h5>\n# rb\/wb \u4e8c\u8fdb\u5236\u6a21\u5f0f，\u65e0\u9700encoding
\nwith open("test.avi", "rb") as src, open("\u526f\u672c.avi", "wb") as dest:
\n while True:
\n data = src.read(1024*1024) # \u4e00\u6b21\u8bfb\u53d61MB
\n if not data:
\n break
\n dest.write(data)<\/p>\n \u4e94\u3001\u5f02\u5e38\u5904\u7406 try-except-finally<\/h3>\n5.1 \u4ec0\u4e48\u662f\u5f02\u5e38<\/h4>\n\u4ee3\u7801\u8fd0\u884c\u51fa\u9519\u65f6\u7a0b\u5e8f\u7ec8\u6b62\u5e76\u629b\u51fa\u62a5\u9519\u4fe1\u606f，\u5373\u4e3a\u5f02\u5e38；\u5f02\u5e38\u6355\u83b7\u53ef\u4ee5\u4fdd\u8bc1\u7a0b\u5e8f\u4e0d\u5d29\u6e83，\u63d0\u5347\u5065\u58ee\u6027\u3002<\/p>\n 5.2 \u5b8c\u6574\u5f02\u5e38\u8bed\u6cd5\u7ed3\u6784<\/h4>\ntry:
\n # \u53ef\u80fd\u62a5\u9519\u7684\u4ee3\u7801\u5757
\nexcept \u6307\u5b9a\u5f02\u5e38 as e:
\n # \u6355\u83b7\u5bf9\u5e94\u5f02\u5e38\u6267\u884c\u903b\u8f91
\nexcept Exception as e:
\n # \u515c\u5e95\u6355\u83b7\u6240\u6709\u5f02\u5e38，\u6253\u5370\u9519\u8bef\u4fe1\u606f
\nelse:
\n # \u65e0\u5f02\u5e38\u65f6\u6267\u884c
\nfinally:
\n # \u65e0\u8bba\u662f\u5426\u62a5\u9519，\u4e00\u5b9a\u4f1a\u6267\u884c（\u5e38\u7528\u4e8e\u5173\u95ed\u6587\u4ef6\u3001\u91ca\u653e\u8d44\u6e90）<\/p>\n 5.3 \u57fa\u7840\u6355\u83b7\u6848\u4f8b<\/h4>\n# \u6355\u83b7\u672a\u5b9a\u4e49\u53d8\u91cf\u5f02\u5e38
\ntry:
\n print(name)
\nexcept Exception as e:
\n print("\u9519\u8bef\u4fe1\u606f：", e)<\/p>\n 5.4 else \u65e0\u5f02\u5e38\u5206\u652f<\/h4>\ntry:
\n f = open("python.txt", "r", encoding="utf-8")
\nexcept Exception as e:
\n print("\u6587\u4ef6\u6253\u5f00\u5931\u8d25：", e)
\nelse:
\n # \u6587\u4ef6\u6b63\u5e38\u6253\u5f00\u624d\u6267\u884c
\n print(f.readlines())
\n f.close()<\/p>\n 5.5 finally \u5fc5\u6267\u884c\u5206\u652f<\/h4>\ntry:
\n f = open("python.txt", "r", encoding="utf-8")
\nexcept:
\n f = open("python.txt", "w", encoding="utf-8")
\nelse:
\n print(f.read())
\nfinally:
\n # \u65e0\u8bba\u662f\u5426\u62a5\u9519，\u4e00\u5b9a\u5173\u95ed\u6587\u4ef6
\n f.close()<\/p>\n 5.6 \u5b9e\u6218：\u5e26\u5f02\u5e38\u5904\u7406\u7684\u731c\u6570\u5b57\u6e38\u620f<\/h4>\n\u6355\u83b7\u7528\u6237\u975e\u6570\u5b57\u8f93\u5165，\u9632\u6b62\u7a0b\u5e8f\u5d29\u6e83<\/p>\n import random
\nnum = random.randint(1, 100)
\nflag = False
\nfor i in range(3):
\n try:
\n input_num = int(input("\u8bf7\u8f93\u51651-100\u6570\u5b57："))
\n if not (1 <= input_num <= 100):
\n print("\u6570\u5b57\u8d85\u51fa\u8303\u56f4！")
\n continue
\n if input_num > num:
\n print("\u731c\u5927\u4e86")
\n elif input_num < num:
\n print("\u731c\u5c0f\u4e86")
\n else:
\n print("\u606d\u559c\u731c\u5bf9！")
\n flag = True
\n break
\n except:
\n print("\u8f93\u5165\u4e0d\u662f\u6709\u6548\u6570\u5b57，\u8bf7\u91cd\u65b0\u8f93\u5165！")
\nif not flag:
\n print("3\u6b21\u673a\u4f1a\u7528\u5b8c，\u6e38\u620f\u7ed3\u675f")<\/p>\n \u516d\u3001PyCharm Debug \u65ad\u70b9\u8c03\u8bd5<\/h3>\n\u8c03\u8bd5\u662f\u6392\u67e5\u4ee3\u7801 bug \u6838\u5fc3\u6280\u80fd，\u64cd\u4f5c\u6b65\u9aa4：<\/p>\n - \u8bbe\u7f6e\u65ad\u70b9：\u70b9\u51fb\u4ee3\u7801\u884c\u53f7\u53f3\u4fa7，\u51fa\u73b0\u7ea2\u8272\u5706\u70b9\u5373\u65ad\u70b9\u751f\u6548，\u518d\u6b21\u70b9\u51fb\u53d6\u6d88<\/li>\n
- \u542f\u52a8\u8c03\u8bd5：\u53f3\u952eDebug \u6587\u4ef6\u540d\u8fdb\u5165\u8c03\u8bd5\u6a21\u5f0f<\/li>\n
\u5e38\u7528\u5feb\u6377\u952e（Windows）<\/h4>\n\n\u5feb\u6377\u952e\u529f\u80fd<\/tr>\n \n\n| F8 Step Over<\/td>\n | \u6267\u884c\u5f53\u524d\u884c，\u8df3\u8fc7\u51fd\u6570\u5185\u90e8<\/td>\n<\/tr>\n | \n| F7 Step Into<\/td>\n | \u8fdb\u5165\u5f53\u524d\u884c\u8c03\u7528\u7684\u51fd\u6570\u5185\u90e8<\/td>\n<\/tr>\n | \n| Shift+F8 Step Out<\/td>\n | \u8df3\u51fa\u5f53\u524d\u51fd\u6570，\u56de\u5230\u8c03\u7528\u4f4d\u7f6e<\/td>\n<\/tr>\n | \n| F9 Resume Program<\/td>\n | \u8fd0\u884c\u5230\u4e0b\u4e00\u4e2a\u65ad\u70b9<\/td>\n<\/tr>\n | \n| Alt+F9 Run to Cursor<\/td>\n | \u76f4\u63a5\u8fd0\u884c\u5230\u5149\u6807\u6240\u5728\u884c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u4e03\u3001\u77e5\u8bc6\u70b9\u603b\u7ed3<\/h3>\n- Lambda \u533f\u540d\u51fd\u6570：\u5355\u884c\u3001\u5e26\u8fd4\u56de\u503c，\u591a\u7528\u4e8e\u6392\u5e8f key\u3001\u4e34\u65f6\u51fd\u6570\u53c2\u6570；<\/li>\n
- \u6587\u4ef6\u64cd\u4f5c\u6838\u5fc3：r \u8bfb\u3001w \u6e05\u7a7a\u5199\u3001a \u8ffd\u52a0\u5199，with open\u81ea\u52a8\u5173\u95ed\u6587\u4ef6；<\/li>\n
- \u6587\u4ef6\u8bfb\u53d6\u4e09\u65b9\u6cd5：read (\u5168\u90e8 \/ \u5206\u6bb5)\u3001readlines (\u884c\u5217\u8868)\u3001readline (\u5355\u884c\u5faa\u73af)；<\/li>\n
- \u5f02\u5e38\u5904\u7406：try \u653e\u98ce\u9669\u4ee3\u7801，except \u6355\u83b7\u62a5\u9519，else \u65e0\u5f02\u5e38\u6267\u884c，finally \u91ca\u653e\u8d44\u6e90；<\/li>\n
- Debug \u65ad\u70b9\u8c03\u8bd5：\u719f\u7ec3\u4f7f\u7528 F7\/F8\/F9 \u5feb\u901f\u5b9a\u4f4d\u4ee3\u7801\u903b\u8f91\u9519\u8bef\u3002<\/li>\n
\u516b\u3001\u7ed3\u5c3e<\/h3>\n\u672c\u6587\u8986\u76d6 Python \u6587\u4ef6\u4e0e\u5f02\u5e38\u5168\u90e8\u5b9e\u64cd\u5185\u5bb9，\u6240\u6709\u4ee3\u7801\u5747\u53ef\u76f4\u63a5\u590d\u5236\u8fd0\u884c，\u9002\u5408\u96f6\u57fa\u7840\u81ea\u5b66\u3001\u671f\u672b\u590d\u4e60\u3001\u9762\u8bd5\u5feb\u901f\u590d\u76d8\u3002\u5982\u679c\u5bf9\u4f60\u6709\u5e2e\u52a9，\u6b22\u8fce\u70b9\u8d5e\u6536\u85cf～<\/p>\n","protected":false},"excerpt":{"rendered":" Python \u96f6\u57fa\u7840 Day07 \u7b14\u8bb0｜Lambda \u533f\u540d\u51fd\u6570\u3001\u6587\u4ef6 IO \u64cd\u4f5c\u3001\u5f02\u5e38\u6355\u83b7\u4e0e Debug \u8c03\u8bd5\u4e00\u3001\u6587\u7ae0\u524d\u8a00\u672c\u7bc7\u6574\u5408 Python \u7b2c 7 \u5929\u6838\u5fc3\u77e5\u8bc6\u70b9，\u5305\u542b\u56db\u5927\u6838\u5fc3\u6a21\u5757：lambda \u533f\u540d\u51fd\u6570\u3001\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u3001with \u81ea\u52a8\u5173\u95ed\u6587\u4ef6\u3001try-except \u5f02\u5e38\u6355\u83b7\u3001PyCharm \u65ad\u70b9\u8c03\u8bd5，\u9644\u5e26\u5927\u91cf\u53ef\u8fd0\u884c\u5b9e\u6218\u6848\u4f8b，\u9002\u5408\u96f6\u57fa\u7840\u5165\u95e8\u3001\u9762\u8bd5\u590d\u4e60\u3001\u8bfe\u5802\u7b14\u8bb0\u590d\u76d8，\u4ee3\u7801\u5747\u53ef\u76f4\u63a5\u590d\u5236\u8fd0\u884c\u3002\u4e8c\u3001<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9098,81,50,371],"topic":[],"class_list":["post-89547","post","type-post","status-publish","format-standard","hentry","category-server","tag-it","tag-python","tag-50","tag-371"],"yoast_head":"\n AI\u5927\u6a21\u578b\u5b66\u4e60\u5206\u4eab - 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