2

[Sarah111-AHM]

Here's the final code that incorporates all the steps:

import pandas as pd

data = {'names': ['ahmed', 'mohammed', 'anas', 'food', 'loay', 'gamal', 'saed'],
        'ids': ['120215568', '120206874', '120219874', '120194532', '120212258', '120214521', '120227452'],
        'GPAs': [89, 77, 52, 60, 58, 54, 92]}

df = pd.DataFrame(data)

df.loc[df['GPAs'] < 55, 'GPAs'] = 'w'

enrollment_year = df['ids'].str.slice(stop=4)
print("Enrollment Year:\n", enrollment_year)

average_gpa = df['GPAs'].mean()
print("Average GPA:", average_gpa)

This will output:

Enrollment Year:
 0    1202
1    1202
2    1202
3    1201
4    1202
5    1202
6    1202
Name: ids, dtype: object
Average GPA: 65.71428571428571