How to read content from standard input stdin in PYTHON

Python has several ways to read data from standard input.

1. sys.stdin

sys.stdin provides read() and readline() functions. If you want to read line by line, you can Consider using it:

import sys
line = sys.stdin.readline()
while line:
    print line,
    line = sys.stdin.readline()

Note: If there is no data, io will be blocked, so you can do data checking on the standard input (Linux):

import sys
import select
if select.select([sys.stdin], [], [], 0.0)[0]:
    help_file_fragment = sys.stdin.read()
else:
    print("No data", file=sys.stderr)
    sys.exit(2)

2, input()

If you want to use the interactive method (prompt for input), Python 3.x can use input(), while Python 2.x uses raw_input():

x = raw_input('请输入您的名字：')

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