python 3.x - Reducing the amount of return statements -

the following code returns bmi risk of person - either low, medium or high. works fine. however, wondering if there way solve without using many return statements.

is there other way, either, pythonic or logically make shorter?

def bmi_risk(bmi, age):     ''' function returning bmi's risk on human '''     if bmi < 22 , age < 45:         return "low"     if bmi < 22 , age >= 45:         return "medium"     if bmi >= 22 , age < 45:         return "medium"     if bmi >= 22 , age >= 45:         return "high" 

perhaps best, or @ least clearest, way through use of multiple if/elif/else blocks variable holding risk:

def bmi_risk(bmi, age):     ''' function returning bmi's risk on human '''     if bmi < 22 , age < 45:         risk = "low"     elif bmi < 22 , age >= 45:         risk = "medium"     elif bmi >= 22 , age < 45:         risk = "medium"     elif bmi >= 22 , age >= 45:         risk = "high"     else:         risk = "unknown"     return risk 

at least, allows checks on risk after assigning before returning.

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there subjective discussion had single or multiple returns in programming languages - ones python have automatic garbage collection.

there isn't terrible wrong code, , multiple returns allow return when needed. example:

def my_function(argument1, argument2):     if some_obvious_error_condition:         return "err"      # 100 lines of complex code      return other_thing