$ python test.py arg1 arg2 arg3 Python 中也可以使用sys的sys.argv来获取命令行参数: sys.argv 是命令行参数列表。 len(sys.argv) 是命令行参数个数。 注:sys.argv[0] 表示脚本名。 实例 test.py 文件代码如下: 实例 #!/usr/bin/python # -*- coding: UTF-8 -*- importsys print'参数个数为:...
argTest.py: error: too few arguments C:\PycharmProjects\p3\src\pyproject1>python argTest.py -h arg test usage: argTest.py [-h] reportnamepositional arguments: reportname set the reportname by this argument optional arguments:-h, --help show this help message and exit C:\PycharmProjects...
Number of arguments: 4 arguments. Argument List: ['test.py', 'arg1', 'arg2', 'arg3'] NOTE- 如上所述,第一个参数始终是脚本名称,它也被计入参数数量。 Parsing Command-Line Arguments Python提供了一个getopt模块,可以帮助您解析命令行选项和参数。 该模块提供了两个函数和一个例外,用于启用命令行参...
In Python, we have a way to adapt the code from a command line. In this tutorial, we are going to see how we can leverage the command line arguments to a Python script to help you work better in your machine learning project. After finishing this tutorial, you will learn Why we ...
'?'. One argument will be consumed from the command line if possible, and produced as a single item. If no command-line argument is present, the value from default will be produced.By default, all arguments are treated as strings. To explicitly mention type of argument, use type parameter...
# import the necessary packages import argparse # construct the argument parse and parse the arguments ap = argparse.ArgumentParser() ap.add_argument("-n", "--name", required=True, help="name of the user") args = vars(ap.parse_args()) # display a friendly message to the user print(...
arguments = sys.argv[1:] The above statement performslist slicingto select elements from index 1 to the last element of the sys.argv list. After obtaining the list of command line arguments, you can use them in your program however you want. ...
In the above example, we have used list indexing to obtain the name of the program from the sys.argv list. Command Line Argument Using sys.argv List in Python As said above, we can also use the sys.argv list to take command-line arguments in Python. The arguments are given in the co...
# This program adds up integers that have been passedasargumentsinthe command lineimportsystry:total=sum(int(arg)forarginsys.argv[1:])print('sum =',total)except ValueError:print('Please supply integer arguments') 为什么只有7行呢,因为第8行在命令行中输入: ...
While argparse is an excellent module for parsing command-line arguments in Python, it’s not the only game in town. There are other methods you can use, such as thegetoptmodule orsys.argv. Let’s take a look at these alternatives. ...