I have two python files first.py and second.py
first.py looks like
def main():
#some computation
first_variable=computation_result
second.py looks like
import first
def main():
b=getattr(first, first_variable)
#computation
but I am getting No Attribute error. Is there any way to access a variable inside main() method in first.py through second.py?
You should use function calls and return values instead of this.
Return the computation_result from the function in the first file, and then store the result in the b variable in the second file.
first.py
def main():
# computation
return computation_result
second.py
import first
def main():
b = first.main()
Other option is to use a global variable in the first file where you will store the value and later reference it.
You will want to read 9.1 and 9.2 in the Tutorial and Naming and Binding in the Language Reference.
In your example first_variable only exists within first.main()'s local scope - while it is executing. It isn't accessible to anything outside of that scope.
You need to get first_variable into first's global scope - then in second you can use it with first.first_variable.
One way would be to return something from first.main() and assign it to first_variable.
def main():
return 2
first_variable = main()
Then in second you can use it:
import first
times_3 = first.first_variable * 3
