Python writing to new lines - python-3.x

Question

I'm trying to get this code to ask for the user's details then save them to a .txt file with commas separating the strings. I need to write to a new line every time I run the code but adding "/n" onto the end of the strings but it gives me all the user's data on the same line. any help?
print ("enter your name, age, and year group and password")
while True:
reg_name = input("Name:"))
reg_pass = input ("Password:")
reg_age = input ("age:")
reg_group = input ("Year Group")
print ("Is this infomation correct?")
print ("Name:",reg_name)
print ("password:",reg_pass)
print ("Age:",reg_age)
print ("Year Group:", reg_group)
reg_correct = input ("[Y/N]").lower()
if reg_correct == "y":
reg_user = reg_name[0:3]+reg_age
reg_write = open("D:\\Computer science\\Computing test\\logindata.txt","a")
reg_write.write (reg_user+","+reg_name+","+reg_pass+","+reg_age+","+reg_group+"/n")
print ("Your username is:",reg_user)
reg_write.close()
break
elif reg_correct == "n":
print ("Please Re-enter your infomation")
else:
Print ("Invalid input! Please try again...!")

Answer 1

I think that you may want \n instead of /n. It is the actual newline character. Otherwise, it would be adding "/n" between each statement in the file. \n creates a newline.
print ("enter your name, age, and year group and password")
while True:
reg_name = input("Name:"))
reg_pass = input ("Password:")
reg_age = input ("age:")
reg_group = input ("Year Group")
print ("Is this infomation correct?")
print ("Name:",reg_name)
print ("password:",reg_pass)
print ("Age:",reg_age)
print ("Year Group:", reg_group)
reg_correct = input ("[Y/N]").lower()
if reg_correct == "y":
reg_user = reg_name[0:3]+reg_age
reg_write = open("D:\\Computer science\\Computing test\\logindata.txt","a")
reg_write.write (reg_user+","+reg_name+","+reg_pass+","+reg_age+","+reg_group+"\n")
print ("Your username is:",reg_user) # ^^^
reg_write.close()
break
elif reg_correct == "n":
print ("Please Re-enter your infomation")
else:
Print ("Invalid input! Please try again...!")

Answer 2

Different way :
You can also avoid escape character by using writelines() method .
reg_write.writelines (reg_user+","+reg_name+","+reg_pass+","+reg_age+","+reg_group)

Answer 3

You can use the print function to write your information to a file. By using the pathlib module, you can easily run some error checking to help verify your file is accessible. With Python's recent addition of format strings, printing out variables can be very easy to accomplish.
#! /usr/bin/env python3
import pathlib
def main():
while True:
username = input('Username: ')
password = input('Password: ')
year_age = input('Age: ')
grouping = input('Group: ')
print('Is this information correct?')
print(f'Username: {username}\n'
f'Password: {password}\n'
f'Age: {year_age}\n'
f'Group: {grouping}')
# noinspection PyUnresolvedReferences
answer = input('Yes or no? ').casefold()
if 'yes'.startswith(answer):
path = pathlib.Path('login_data.csv')
if path.exists() and not path.is_file():
print('Your information cannot be saved.')
else:
with path.open('at') as file:
# noinspection PyTypeChecker
print(
username, password, year_age, grouping,
sep=',', file=file
)
break
elif 'no'.startswith(answer):
print('Please enter your information so that it is correct.')
else:
print('I did not understand your answer. Please try again.')
if __name__ == '__main__':
main()