How can I pass a list as a command-line argument with argparse?
LONG ANSWER Let's take a look in more detail at some of the different ways one might try to do this, and the end result. import argparse parser = argparse.ArgumentParser() # By default it …
parsing - lexers vs parsers - Stack Overflow
Are lexers and parsers really that different in theory? It seems fashionable to hate regular expressions: coding horror, another blog post. However, popular lexing based tools: …
Argparse optional positional arguments? - Stack Overflow
parser.add_argument('dir', nargs=argparse.REMAINDER, default=os.getcwd()) argparse.REMAINDER. All the remaining command-line arguments are gathered into a list. …
What is parsing in terms that a new programmer would understand?
May 29, 2010 · A parser for that language would accept AABB input and reject the AAAB input. That is what a parser does. In addition, during this process a data structure could be created …
Looking for a clear definition of what a "tokenizer", "parser" and ...
202 I am looking for a clear definition of what a "tokenizer", "parser" and "lexer" are and how they are related to each other (e.g., does a parser use a tokenizer or vice versa)? I need to create a …
c# - What is parsing? - Stack Overflow
Jun 5, 2015 · A parser is a compiler / interpreter component that breaks data into smaller elements for easy translation into another language. A parser takes input in the form of a …
Python argparse command line flags without arguments
As you have it, the argument w is expecting a value after -w on the command line. If you are just looking to flip a switch by setting a variable True or False, have a look here (specifically …
parsing - How to write a Parser in C#? - Stack Overflow
Sep 11, 2011 · How do I go about writing a Parser (Recursive Descent?) in C#? For now I just want a simple parser that parses arithmetic expressions (and reads variables?). Though later I …
python - Parsing boolean values with argparse - Stack Overflow
I would like to use argparse to parse boolean command-line arguments written as "--foo True" or "--foo False". For example: my_program --my_boolean_flag False However, the following test …
Check if argparse optional argument is set or not
May 27, 2015 · Very simple, after defining args variable by 'args = parser.parse_args ()' it contains all data of args subset variables too. To check if a variable is set or no assuming the …