Pandas and adding column and data to a table - python-3.x

Question

Any idea how to add the division(j) to each row?? I run the program and it runs through each division (division 1 through 5). I want to add what division it is to each row. I have the headers 'Name, Gender, State, Position, Grad, Club/HS, Rating, Commitment, Division' at the top of the table. Right now I don't know which division each row is because it is blank. Thanks for your help....
import pandas as pd
max_page_num = 10
with open('results.csv', 'a', newline='') as f:
f.write('Name, Gender, State, Position, Grad, Club/HS, Rating, Commitment, Division\n')
def division():
for j in range(1,5):
division = str(j)
for i in range(max_page_num):
print('page:', i)
graduation = str(2020)
area = "commitments" # "commitments" or "clubplayer"
gender = "m"
page_num = str(i)
source = "https://www.topdrawersoccer.com/search/?query=&divisionId=" + division + "&genderId=m&graduationYear=" + graduation + "&playerRating=&pageNo=" + page_num + "&area=" + area +""
all_tables = pd.read_html(source)
df = all_tables[0]
print('items:', len(df))
df.to_csv('results.csv', header=False, index=False, mode='a')
division()

Answer 1

Simply adding the column 'division' should do it if I understand correctly.
import pandas as pd
max_page_num = 10
with open('results.csv', 'a', newline='') as f:
f.write('Name, Gender, State, Position, Grad, Club/HS, Rating, Commitment, Division\n')
def division():
for j in range(1,5):
division = str(j)
for i in range(max_page_num):
print('page:', i)
graduation = str(2020)
area = "commitments" # "commitments" or "clubplayer"
gender = "m"
page_num = str(i)
source = "https://www.topdrawersoccer.com/search/?query=&divisionId=" + division + "&genderId=m&graduationYear=" + graduation + "&playerRating=&pageNo=" + page_num + "&area=" + area +""
all_tables = pd.read_html(source)
df = all_tables[0]
df['division'] = division
print('items:', len(df))
df.to_csv('results.csv', header=False, index=False, mode='a')
division()