Python : IndexError: tuple index out of range

Question

In python i have this code

if record[0][1]:

the problem is.. when mysql does not return anything and thus..

record[0][1]

has no data..

this python code fails:

if record[0][1]:
IndexError: tuple index out of range

i simply want it to move on to the "else" statement or simply consider this if statement as .. invalid given that

record[0][1]

has no value. or data.. ( incoming stuff from mysql )

You can always just try: ... except IndexError: ...

TheSoundDefense
– TheSoundDefense

2014-08-06 20:26:45 +00:00
Commented Aug 6, 2014 at 20:26 — TheSoundDefense
– TheSoundDefense, Commented Aug 6, 2014 at 20:26

celeritas · Accepted Answer · 2014-08-06 20:28:56Z

8

try:
    if record[0][1]:
        # Do stuff
except IndexError:
    pass

answered Aug 6, 2014 at 20:28

celeritas

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2 Comments

El Bert Over a year ago

That look like an anti-pattern as in Python you would just access the tuple - surrounded by a try/except - but actually not test if the data exist. Ask forgiveness not permission.

Pyd Over a year ago

i am also getting an error like this stackoverflow.com/questions/46945860/…

merlin2011 · Accepted Answer · 2014-08-06 20:27:53Z

2

You can use a try...except or use a short-circuiting check on outer tuple.

if len(record) > 0 and len(record[0]) > 1 and record[0][1]:

answered Aug 6, 2014 at 20:27

merlin2011

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