Exercise 16: Reading And Writing Files

Python文件操作示例

最新推荐文章于 2021-01-27 04:33:23 发布

转载最新推荐文章于 2021-01-27 04:33:23 发布 · 75 阅读

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原文链接：http://www.cnblogs.com/hluo/p/4046912.html

本文通过一个Python脚本示例展示了如何创建、写入及关闭文件。该脚本首先提示用户确认是否要清除指定文件的内容，然后引导用户输入三行文本并将其写入到文件中。

from sys import argv
script, filename = argv
print "We're going to erase %r." % filename print "If you don't want that, hit CTRL-C (^C)." print "If you do want that, hit RETURN."
raw_input("?")
print "Opening the file..."
target = open(filename, 'w')
print "Truncating the file. Goodbye!"
target.truncate()
print "Now I'm going to ask you for three lines."
line1 = raw_input("line 1: ")
line2 = raw_input("line 2: ")
line3 = raw_input("line 3: ")
print "I'm going to write these to the file."
target.write(line1)
target.write("\n")
target.write(line2)
target.write("\n")
target.write(line3)
target.write("\n")
print "And finally, we close it."
target.close()