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  1. How do I use a Boolean in Python? - Stack Overflow

    Mar 16, 2018 · Does Python actually contain a Boolean value? I know that you can do: checker = 1 if checker: #dostuff But I'm quite pedantic and enjoy seeing booleans in Java. For instance: Boolean checker;...

  2. Evaluate boolean environment variable in Python - Stack Overflow

    Jul 27, 2020 · This will return True for any value of MY_ENV_VAR because the boolean value of any string is True in Python. Hence, also values like False, false, 0, etc. will end up as True. Likely not what you want.

  3. How to set python variables to true or false? - Stack Overflow

    I want to set a variable in Python to true or false. But the words true and false are interpreted as undefined variables: #!/usr/bin/python a = true; b = true; if a == b: print ("same...

  4. python - Getting indices of True values in a boolean list - Stack …

    I have a piece of my code where I'm supposed to create a switchboard. I want to return a list of all the switches that are on. Here "on" will equal True and "off" equal False. So now I just want to

  5. python - Parsing boolean values with argparse - Stack Overflow

    Here is another variation without extra row/s to set default values. The boolean value is always assigned, so that it can be used in logical statements without checking beforehand: import argparse parser = argparse.ArgumentParser(description="Parse bool") parser.add_argument("--do-something", default=False, action="store_true",

  6. python - How do "and" and "or" act with non-boolean values?

    Oct 30, 2017 · Where exp1 and exp2 are arbitrary python objects, or expressions that return some object. The key to understanding the uses of the logical and and or operators here is understanding that they are not restricted to operating on, or returning boolean values. Any object with a truthiness value can be tested here.

  7. Syntax for an If statement using a boolean - Stack Overflow

    I just recently joined the python3 HypeTrain. However I just wondered how you can use an if statement onto a boolean. Example: RandomBool = True # and now how can I check this in an if statement? L...

  8. python - Getting Cannot mask with non-boolean array containing …

    Mar 25, 2021 · Specifying na to be False (na=False), replaces NaN values with False values and avoids this error; an alternative solution would also be Series.fillna(False) before calling the function. Somehow using other filling values does not …

  9. python - What is a convenient way to store and retrieve boolean …

    Sep 15, 2010 · If I store a boolean value using the CSV module, it gets converted to the strings True or False by the str() function. However, when I load those values, a string of False evaluates to being True b...

  10. python - Logical operators for Boolean indexing in Pandas - Stack …

    Python's and, or and not logical operators are designed to work with scalars. So Pandas had to do one better and override the bitwise operators to achieve a vectorized (element-wise) version of this functionality. So the following in Python (where exp1 and exp2 are expressions which evaluate to a boolean result)...

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