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Variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such variables are called special variables.For example, $ represents the ID of the current shell
Command-line arguments in PythonPython has a module SYS,SYS.ARGV this property provides access to command-line arguments. A command-line argument is a parameter other than the program name when a program is called.SYS.ARGV is a list of command-line
Learn the C language when you do not understand the use of command-line parameters, in the learning Pyton, and encountered the command line parameters, here a little study, a little understanding of some here to make a record convenient back review
Sometimes we need to write some scripts to handle some tasks, it is often necessary to provide some command line parameters, according to different parameters for different processing, in Python, command line parameters and C language very similar
When someone else executes a python file that supports command-line arguments, and instantly feels tall and up, how do you write a Python script with command-line arguments? Without straining, here's a quick and easy way to learn how to get your own
Variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such variables are called special variables.For example, $ represents the ID of the current shell
As already mentioned, variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such variables are called special variables.For example, $ represents the ID of
As already mentioned, variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such variables are called special variables.For example, $ represents the ID of
As already mentioned, variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such variables are called special variables.For example, $ represents the ID of
Command-line arguments(Transferred from Http://c.biancheng.net/cpp/view/2739.html)
List of special variables
variables
meaning
$
File name of the current script
$n
Arguments passed to
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