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There is a newer version: 4.23.0.17664

Why is this an issue?
Having too many return statements in a function increases the function’s essential complexity because the flow of execution is broken each time a
return statement is encountered. This makes it harder to read and understand the logic of the function.
Noncompliant code example
With the default threshold of 3:
def fun():          # Noncompliant as there are 4 return statements
  if condition1:
    return True
  elif condition2:
    return False
  else:
    return True
  return False