Python - file I/O

file_io.py

#!/usr/bin/python
# Filename: file_io.py

poem = '''\
Programming is fun
When the work is done
if you wanna make your work also fun:
    use Python!
'''

f = open('poem.txt', 'w', encoding="utf-8") # 写模式打开
f.write(poem) # 写文件
f.close() # 关闭文件

f = open('poem.txt', encoding="utf-8") # 如果没有提供打开模式, 则默认假设为读模式
while True:
    line = f.readline()
    if not line:
        break
    print(line, end='')
f.close() # 别忘了关闭文件