在熊猫数据框内拆分字符串

Question

I have this column in my dataframe which has numbers in a string like "6,22,67,82" for example. I want to split this strings into arrays of integers and keep the arrays in the dataframe.

  h['htgt']=h['htgt'].split()

This does not work because it tries to split the whole series.

Answer 1

You can use pd.Series.str.split with expand=True and then convert to int . Assumes you have an equal number of numbers in each string.

h = pd.DataFrame({'htgt': ['6,22,67,82', '12,45,65,14', '54,15,9,94']})

res = h['htgt'].str.split(',', expand=True).astype(int)

print(res)

    0   1   2   3
0   6  22  67  82
1  12  45  65  14
2  54  15   9  94