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jiahuang zhou
3,692 Pointshow to solve the problem
how to input the varible
def add(a, b):
return float(a) + float(b)
try:
a = input("a: " )
b = input("b: " )
except ValueError:
return None
else:
return add(a, b)
2 Answers

Chris Freeman
Treehouse Moderator 68,460 PointsYou have all the elements, they need to be rearranged:
def add(a, b):
try:
return float(a) + float(b)
except ValueError:
return None

jiahuang zhou
3,692 Pointsthank you so much...