I would like to run a python command that return true or false inside a bash script:
#!/usr/bin/env bash Some stuff... boolean = $(python -c "bool(...operations...)") The code above is just to sketch the idea. I need boolean to be false or true (bash boolean values) depending on the result of ...operations.... The code above is not working: boolean results to be an empty variable.
bool=$(python -c 'print(bool("abc"))') works as expected.
Note that this will return True or False not true or false (i.e., capitalized).
Bash has no preconception on boolean values, but if you need your bool to be either false or true, then you can use this snippet
bool=$(python -c 'print("true" if ...operations... else "false")') E.G.,
$ for a in 4 5 ; do > bool=$(python -c 'print("true" if '$a' == 4 else "false")') > echo $bool > done true false $ 