global calls
calls = 0

def ga_main(i):
global calls
calls = i
list = gplearn.fit(params)
return list

def fit():
global calls
result = parallel(params)
return result

parallel function contains the following class

class fitness():
def pearson_3D(params):
global calls
….
return result_2

#but calls in the last function can’t be recognized
#NameError: name ‘calls’ is not defined
#i try to add global calls to the class and function but it makes no sense