Condition failed in the function

Question

I would like to create a function that take a list and sum all number in the list. For instance, in the list ["a", 1.50, 2, u'week', 250, 12], the function will return the output 255.50 (1.50 + 2 +250 +12).

def sum(list):
   sum = 0
   for item in list:
      if type(item) == 'a number'
         sum += item
   return sum

By what could I replace the line if type(item) == 'a number'?

@MosesKoledoye `float()` throws a `ValueError` if you can't convert it — TemporalWolf, Mar 15 '17 at 18:55
@TemporalWolf He does not need `float`, they are already floats. Adding a float to a string gives a `TypeError`: `my_sum=0.; ... my_sum += item` — Moses Koledoye, Mar 15 '17 at 18:56

score 1 · Accepted Answer · answered Mar 15 '17 at 19:01

1

Try the following

from numbers import Number

if isinstance(item, Number):

answered Mar 15 '17 at 19:01

Robert Jacobs

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Condition failed in the function

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