Invalid Syntax in Python 3 when creating a list of tuples

Question

I am trying to create a list of tuples and I am getting Invalid Syntax:

def match_enzymes(strand, enzymes, sequences):
'''(str, list of str, list of str) -> list of (str, list of int) tuples

Return a list of tuples where the first item of each tuple is the name of a restriction enzyme and the second item is the list of indices of the restriction sites that the enzyme cuts.

>>>
>>>
>>>
'''

list_of_tuples = []

for i in range(len(enzymes)):
    list_of_tuples.append((enzymes[i], restriction_sites(strand, sequence[i]))

return list_of_tuples

If your code is indented like this, you would get invalid syntax. — Eli Sadoff, Nov 07 '16 at 04:33
Possible duplicate of ["Expected an indented block" error?](http://stackoverflow.com/questions/19657576/expected-an-indented-block-error) — Zero Piraeus, Nov 07 '16 at 05:09

score 0 · Accepted Answer · answered Nov 07 '16 at 05:50

0

two problems:

1) you are missing the closing parentheses in:

 list_of_tuples.append((enzymes[i], restriction_sites(strand, sequence[i])) #<--!!!

2) your code is not indented currently

answered Nov 07 '16 at 05:50

Yoav Glazner

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Invalid Syntax in Python 3 when creating a list of tuples

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