fromdocoptimportdocopt if__name__ =='__main__': arguments = docopt(__doc__, version='Example 1.0') print(arguments) **Note:** docopt is not tested with Python 3.6 Fire Python Fire automatically generates a command line interface, you only need one line of code. Unlike the other modul...
In the above example, we have directly accessed and printed the command line arguments. However, you can also store the command line arguments in specific variables as shown below. importsysprint("Hi, I am avidpython.")print("The sys.argv list is:",sys.argv)sys_argv_length=len(sys.argv...
1 $ python simple_example.py --help2 usage: simple_example.py [-h] -n NAME34optional arguments:5 -h, --help showthishelp message and exit6 -n NAME, --name NAME name of the user 接下来,你可以尝试在ternimal中输入以下命令,便可以看到结果: 1 $ python simple_example.py --name Adrian2...
But the downside of doing things this way is, if we make a mistake when calling this command-line program, we won't see very helpful error messages.For example, if we pass too few arguments Python doesn't really tell us much about what's going on:...
# 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(...
Using getopt to handle Python command line arguments As you see in the last example, sys.argv could be helpful for position-based arguments. In other words, if you always pass the arguments in the same order, it will work fine. But what if you wanted keyword-based arguments? While you ...
除了使用input()函数从命令行接收输入外,Python还提供了一种从命令行获取参数的方式。这些参数被称为“命令行参数”(command-line arguments),可以用于向程序传递额外的信息。 要使用命令行参数,我们需要导入Python内置的sys模块。该模块包含一个名为argv的列表,其中存储了所有的命令行参数。例如,下面的代码演示了如何...
optional arguments:-h, --help show this help message and exit C:\PycharmProjects\p3\src\pyproject1>python argTest.py report1.htmlarg test report1.html 4. 再添加一个可选择的参数,没有配置可选参数时,读取该参数,获取的是None #coding=utf-8import argparseif__name__ =="__main__": ...
The example produces greeting messages to all names specified with thenornameoptions; they can be repeated multipile times. $ appending.py -n Peter -n Lucy --name Jane Hello Peter! Hello Lucy! Hello Jane! The nargs option Thenargsspecifies the number of command-line arguments that should be...
Python 提供了getopt模块来获取命令行参数。 $ 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: ...