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GeezerVison is showing github.com — python_test/test28.py at master · zhangyfzone/python_test Expand file tree/ Copy pathtest28.pyMore file actions 46 lines (35 loc) · 1.21 KB / Copy pathtest28.pyFile metadata and controls46 lines (35 loc) · 1.21 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 #!/usr/bin/env python3 # -*- coding: utf-8 -*- '练习读取文件' __author__ = 'sergiojune' # 默认编码方式是gbk,而编译器是utf-8,所以需要指定编码方式 f = open('./test27.py', 'r', encoding='utf-8') # 读取文件全部内容,有一个参数为读取文件的大小 # 当文件较小时可以这样读 # txt = f. read() # print(txt) # 还可以这样一行一行读 print(f.readline()) # 以一行行形式读全部内容 for line in f.readlines(): print(line) # 最后记得关闭文件 f.close() # 当文件出现异常时,或许关闭不了文件,就需要捕捉异常 try: f = open('./test26.py', 'r', encoding='utf-8') for x in f.readlines(): print(x) except IOError as e: print(e) finally: # 最后一定关闭 if f: f.close() # 如果每次都需要这样捕捉异常,就会很麻烦,python中可以用with语句块来处理 with open('./test27.py', 'r', encoding='utf-8') as f: # 当离开这个语句块就会自动关闭,就不需要我们来关闭 txt = f.read() print(txt) # 作业:请将本地一个文本文件读为一个str并打印出来 # 上面的就是了,参考上面的 |
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