Syntax Error in for loop Python

Question

this runs fine on my local machine, but as soon as I deploy it the service fails saying invalid syntax "for"

  data = {k: request.form[k] for k in request.form.iterkeys()}   
SyntaxError: invalid syntax

Appreciate the help on this, it's been a very long time since I did anything with Python and this one has got me stumped.

what versions of Python are you running locally and for the service? — MattDMo, Jan 21 '14 at 22:29
The syntax requires Python 2.7 or newer. Does your server run 2.6 perhaps? — Martijn Pieters, Jan 21 '14 at 22:29
Also see [Dict comprehension with Python 2.6](http://stackoverflow.com/q/21069668) — Martijn Pieters, Jan 21 '14 at 22:31

score 2 · Accepted Answer · answered Jan 21 '14 at 22:50

2

As others have mentioned, this is probably a version issue. Try:

data = dict((k,request.form[k]) for k in request.form.iterkeys())

answered Jan 21 '14 at 22:50

ebarr

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score 1 · Answer 2 · answered Jan 21 '14 at 22:30

1

The python version on your local machine might be different from the version you have on the server.

answered Jan 21 '14 at 22:30

Yosi

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I will check that now. – AppHandwerker Jan 21 '14 at 22:34
ah yes, i'm running 2.7 server is running 2.6 - Will see if I can't get that changed. Then try again. – AppHandwerker Jan 21 '14 at 22:39

score 0 · Answer 3 · answered Jan 21 '14 at 22:30

0

Dict comprehensions are a relatively new addition to 2.x. Convert it to a genex that generates (key, value) pairs and pass it to the dict() constructor.

answered Jan 21 '14 at 22:30

Ignacio Vazquez-Abrams

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Could provide an example. Not trying to be cheeky, just not familiar with Python. – AppHandwerker Jan 21 '14 at 22:33
@SimonH: I linked you to a post with an example in the comments on your question. – Martijn Pieters Jan 21 '14 at 22:35

Syntax Error in for loop Python

3 Answers3