Python: user input and commandline arguments

我如何拥有一个可以接受用户输入的Python脚本（假设这是可能的），并且如果从命令行运行，如何让它读入参数？

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To read user input you can try the cmd module for easily creating a mini-command line interpreter (with help texts and autocompletion) and raw_input ( input for Python 3+) for reading a line of text from the user.

text = raw_input("prompt")  # Python 2
text = input("prompt")  # Python 3

Command line inputs are in sys.argv . Try this in your script:

import sys
print (sys.argv)

There are two modules for parsing command line options: optparse (deprecated since Python 2.7, use argparse instead) and getopt . If you just want to input files to your script, behold the power of fileinput .

The Python library reference is your friend.

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var = raw_input("Please enter something: ")
print "you entered", var

或者对于Python 3：

var = input("Please enter something: ")
print("You entered " + str(var))

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raw_input is no longer available in Python 3.x. But raw_input was renamed input , so the same functionality exists.

input_var = input("Enter something: ")
print ("you entered " + input_var) 

Documentation of the change

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