pylint-errors
W0601 (global-variable-undefined)
Problematic code:
var = 1
def foo():
global v
print(v)
v = 10
print(v)
foo()
print(var)
Correct code:
var = 1
def foo():
global var
print(var)
var = 10
print(var)
foo()
print(var)
Rationale:
Used when a variable is defined through the global statement but the
variable is not defined in the module scope.