How to convert string to int in Python?

Question

I am reading a number from a text file and trying to convert it into an int but it keeps giving me errors. This is my code:

f = open('commentcount.txt', 'r')
counts = f.readline()
int(counts)
counts = counts + 1
print(counts)

I am getting this error:

  counts = counts + 1
TypeError: Can't convert 'int' object to str implicitly

What am I doing wrong?

Christian Tapia · Accepted Answer · 2014-01-12 06:18:09Z

5

You must assign the value of int(counts) to counts in order to keep changes. Note that int(...) doesn't modify the variable you pass in.

counts = int(counts)

Be sure that f.readline() return an string that "represents" a int.

answered Jan 12, 2014 at 6:18

Christian Tapia

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