The following code snippet showcases a common error in Python programming:
def reportRealDiagnostics():
ranks = 0
class Rank:
def __init__(self):
global ranks
ranks += 1
rank = Rank()
reportRealDiagnostics()
When executed, the code above will result in the following error message being displayed:
NameError: global name 'ranks' is not defined
By addressing this error, you will be able to successfully execute the given code.