CODEWITHSUNDEEP
python
Emmanu
Emmanu

Reputation: 797

How to read numbers in text file as numbers in to list?

I have a text file in which there are numbers in each line(only numbers). My color.txt looks like:

3
3
5
1
5
1
5

When I read this to list using

f=open('D:\\Emmanu\\project-data\\color.txt',"r")
    for line in f:
        g_colour_list.append(line.strip('\n'))
    print g_colour_list

the output is like

['3', '3', '5', '1', '5', '1', '5']

But I want it as:

[3,3,5,1,5,1,5]

How can I do that in the single line that is
g_colour_list.append(line.strip('\n'))?

Upvotes: 5

Views: 12991

Answers (5)

lakshman sai
lakshman sai

Reputation: 501

You can typecast it to int, doing: 

f = open('color.txt',"r")
g_colour_list=[]

for line in f:
    g_colour_list.append(int(line.strip('\n')))

print (g_colour_list)

Upvotes: 0

Julien Salinas
Julien Salinas

Reputation: 1139

One possible solution is to cast the string to integer on appending. You can do it this way :

g_colour_list.append(int(line.strip('\n')))

If you think you will get floats as well then you should use float() instead of int().

Upvotes: 1

Keiwan
Keiwan

Reputation: 8251

for line in f:
    g_colour_list.append(int(line.strip('\n')))

You can parse a string s to int with int(s)

Upvotes: 0

mvelay
mvelay

Reputation: 1520

just cast your strings into integers:

g_colour_list.append(int(line.strip('\n')))

Upvotes: 2

Dion Bridger
Dion Bridger

Reputation: 66

Wrap a call to python's int function which converts a digit string to a number around your line.strip() call:

f=open('D:\\Emmanu\\project-data\\color.txt',"r")
    for line in f:
        g_colour_list.append(int(line.strip('\n')))
    print g_colour_list

Upvotes: 1

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