Int 太大而无法在执行 .astype(int) 时转换为 C long

Question

I'm running a python script, where I have to convert a string column from a pandas df to int , using the astype(int) method. However, I get this following error:

"Python int too large to convert to C long"

My strings are all numbers in string format, up to 15 characters. Is there a way to convert this column to int type without this popping this error?

Answer 1

You need to use .astype('int64')

import pandas as pd
df = pd.DataFrame({'test': ['999999999999999','111111111111111']})
df['int'] = df['test'].astype('int64')

Answer 2

Check whether you are assigning a Large Integer values to variable.

1) Instead of applying multiplication, using power

For example:

x = [10**i for i in range(1,1000)] instead of [10*i for i in range(1,1000)]  ,which will cross the variable limit