for loop syntax in python

Question

Sorry this might be a very stupid question. But I did have bug with the following naming.

for i in my_hash_dict:      #1st
   for y in my_hash_dict[i]:
      do something with i ...

for i in my_hash_dict:       #2nd
      do something with i...

the problem is seems like if I reusing i this name in 2nd for loop , it "seems" will cost my program not running correctly. If I change the i in 2nd for loop, then seems everything working fine...

Maybe it just some of my stupid typo or something else cause this problem.

But I hope experiecned python programmer can give me some answers... Thankyou

You are missing a : at the end of the for line. Please post some real Python code. — user647772
– user647772, Commented Oct 23, 2012 at 7:37

Toon Krijthe · Accepted Answer · 2012-10-23 08:12:34Z

7

The problem is that you are using the 'i' element as index.
Probably this code will work for you:

for element in my_hash_dict:     
    for y in element:
        do something with y ...

edited Oct 23, 2012 at 8:12

Toon Krijthe

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answered Oct 23, 2012 at 7:53

jvallver

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Comments

CloudyMarble · Accepted Answer · 2012-10-23 07:43:43Z

1

Its a syntax issue as Tichodroma mentioned, take a look at this documentation, your example looks fine you just need to add the : if you still get an unexpected output please post it.

answered Oct 23, 2012 at 7:43

CloudyMarble

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