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  1. python - How do I pass a variable by reference? - Stack Overflow

    Jun 12, 2009 · Python: Python is “pass-by-object-reference”, of which it is often said: “Object references are passed by value.” (read here). Both the caller and the function refer to the …

  2. What is the purpose of the single underscore "_" variable in Python?

    May 5, 2011 · Underscore _ is considered as " I don't care " or " throwaway " variable in Python The python interpreter stores the last expression value to the special variable called _.

  3. How can I use variables in an SQL statement in Python?

    I have the following Python code: cursor.execute("INSERT INTO table VALUES var1, var2, var3,") where var1 is an integer. var2 and var3 are strings. How can I write the variable names without …

  4. How can I access environment variables in Python?

    How can I access environment variables in Python? Asked 14 years, 9 months ago Modified 1 year, 9 months ago Viewed 3.5m times

  5. python - How to test multiple variables for equality against a …

    36 To check if a value is contained within a set of variables you can use the inbuilt modules itertools and operator. For example: Imports:

  6. Is there a standardized method to swap two variables in Python?

    In Python, I've seen two variable values swapped using this syntax: left, right = right, left Is this considered the standard way to swap two variable values or is there some other means by …

  7. How to set environment variables in Python? - Stack Overflow

    I need to set some environment variables in the Python script and I want all the other scripts that are called from Python to see the environment variables' set. If I do, …

  8. python - How do I check if a variable exists? - Stack Overflow

    May 9, 2009 · I want to check if a variable exists. Now I'm doing something like this: try: myVar except NameError: # Do something. Are there other ways without exceptions?

  9. python - How can I view and use notebook variables in VS Code …

    Oct 18, 2020 · The variables in the script can be easily viewed and used in Console after running it. (also can be viewed in variable explorer) So, Is there any way (by setting or extension) to …

  10. How do I save and restore multiple variables in python?

    The question was "How do I save and restore multiple variables in python?" Please update your answer how to handle multiple variables in a pickle, instead of one variable.