通过内置的fileinput模块即可实现,创建文件filein.py:
#!/usr/bin/env python
import fileinput
f_input = fileinput.input()
for line in f_input:
print(line, end='')
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增加可执行权限:
chmod a+x filein.py
使用:
$ ls | ./filein.py # Prints a directory listing to stdout.
$ ./filein.py /etc/passwd # Reads /etc/passwd to stdout.
$ ./filein.py < /etc/passwd # Reads /etc/passwd to stdout.