[Python] How to check the username in text file or not and then ask for the password?

loginUsername = input("Enter Username: ")
loginPassword = input("Enter PASSWORD: ")

data=open('database.txt', 'r')
accounts = data.readlines()

for line in data:
accounts = line.split(",")
if (loginUsername == accounts[0] and loginPassword == accounts[1]):
print("LOGGED IN")
else:
print("Login FAILED")

print(accounts)


I want to make a text login system, which will ask for the username first. After checking the text file which stored username and password, the system will ask for password. But I don't know how to read the first column (which is username, the structure of the text file is "username, password"). If i use readlines() and split(","). But there is "n" at the end of the password.

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