yield and return only make sense in the context of functions. Using them outside a function raises a
SyntaxError.
If the goal is to break out of a loop, use break instead of return.
Code examples
Noncompliant code example
a = 1
while a < 3:
if a % 2 == 0:
return # Noncompliant: return is outside of a function
a += 1
for n in range(5):
yield n # Noncompliant: yield is outside of a function
Compliant solution
a = 1
while a < 3:
if a % 2 == 0:
break
a += 1
def gen():
for n in range(5):
yield n
