TypeError: 'int' object does not support item assignment - new to Python

Question

Trying to do some some questions in a book yet I'm stuck with my arrays. I get this error:

count[i] = x
TypeError: 'int' object does not support item assignment

My code:

import pylab
count = 0

for i in range (0,6):
    x = 180
    while x < 300:
        count[i] = x
        x = x + 20
        print count

Basically I need to use a loop to store values which increase until they hit 300 in an array. I'm not sure why I'm getting that error.

I might have worded this poorly. I need to use a loop to make 6 values, from 200, 220, 240... to 300, and store them in an array.

count is an integer, not a list. You need to make count = [], and to add things to a list, you use .append — Rafael Barros
– Rafael Barros, Commented Jan 6, 2015 at 16:13

Tim Pietzcker · Accepted Answer · 2015-01-06 16:14:36Z

4

count is an integer. Integers don't have indexes, only lists or tuples (or objects based on them) do.

You want to use a list, and then append values to it:

count = []
for i in range (0,6):
    x = 180
    while x < 300:
        count.append(x)
        x = x + 20
        print count

answered Jan 6, 2015 at 16:14

Tim Pietzcker

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Comments

Kasravnd · Accepted Answer · 2015-01-06 16:13:54Z

1

You have defined count as an int number and as the error says ('int' object does not support item assignment) you need a list instead , :

count = []

and use append() function to append the numbers to your list :

for i in range (0,6):
    x = 180
    while x < 300:
        count.append(x)
        x = x + 20
        print count

answered Jan 6, 2015 at 16:13

Kasravnd

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2 Comments

Versace Over a year ago

Doing that, it tells me:count[i] = x IndexError: list assignment index out of range

Kasravnd Over a year ago

@Versace yes , as you initial your list empty it raise index error , you need to use append function

Padraic Cunningham · Accepted Answer · 2015-01-06 16:28:06Z

1

You don't need the while loop, you can use range with a start,stop,step:

count = []
for i in xrange (6):
    for x in  xrange(180,300,20):
        count.append(x)
        print count

Or use range with extend:

count = []
for i in xrange(6):
    count.extend(range(180,300,20))

Or simply:

 count range(180,300,20) * 6 `

edited Jan 6, 2015 at 16:28

answered Jan 6, 2015 at 16:21

Padraic Cunningham

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Comments

matcheek · Accepted Answer · 2015-01-06 16:17:37Z

0

Use dictionary

count = {}

for i in range (0,6):
    x = 180
    while x < 300:
        count[i] = x
        x = x + 20
        print count

answered Jan 6, 2015 at 16:17

matcheek

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