for 循环重复 17 次

Question

I have the following code, but when I execute it, it prints the age_groups_list 17 times,

Any idea why?

import pandas as pd
file = pd.read_csv(r"file location")
age_groups_list = []
for var in file[1:]:
    age = file.iloc[:, 10]
    age_groups_list.append(age)
print(age_groups_list)

the idea is that I have a csv file with 16,000 (+) rows and 20 columns, I am picking the age group from index 10, adding it to a list and then print the list, however when printing the list, it does it for 17 time, this image shows the end of the printing output. Any idea what am I doing wrong here? thanks

Answer 1

file.iloc[:,10] already gives you all the data you need the loop is useless what you see is actually a list of lists. change it to this:

import pandas as pd
file = pd.read_csv(r"file location")
age_groups_list = file.iloc[:, 10]
print(age_groups_list)