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: …
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 …
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 …
Argparse: Required arguments listed under "optional arguments"?
I use the following simple code to parse some arguments; note that one of them is required. Unfortunately, when the user runs the script without providing the argument, the displayed …
Looking for a clear definition of what a "tokenizer", "parser" and ...
Mar 28, 2018 · 201 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)? …
Best practices for writing a programming language parser
Nov 27, 2012 · You're better off finding a parser generator that can handle a larger language set. If you really don't want to get into tools, you can look at recursive descent parsers - it's a really …
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 …
Difference between compilers and parsers? - Stack Overflow
Feb 5, 2016 · Parser just process the language and return the tree representation of it, compiler generate something from that tree, actual machine codes or another language.