python - "UnboundLocalError: local variable 'input' referenced before assignment"

Question

When I run my code I get these errors:

linechoice = input("What password do you want to delete?:
")

UnboundLocalError: local variable 'input' referenced before assignment

def delete():
    print("Welcome to the password delete system.")
    file = open("pypyth.txt", "w")
    output =  []
    linechoice = input("What password do you want to delete?:
")
    if linechoice == "email":
        for line in file:
            if "Hotmail" != line.strip():
                output.append(line)
                print("Password " + linechoice + " deleted.")
                y_n = input = ("Do you want to save these changes?
y/n
")
                if y_n == "y":
                    file.close()
                    print("Change saved.")
                    input("Press enter to go back to menu")
                    main()
                else:
                    main()
    elif linechoice == "skype":
        for line in file:
            if "Skype" != line.strip():
                output.append(line)
                print("Password " + linechoice + " deleted.")
                y_n = input = ("Do you want to save these changes?
y/n
")
                if y_n == "y":
                    file.close()
                    print("Change saved.")
                    input("Press enter to go back to menu")
                    main()
                else:
                    main()
    else:

Answer 1

You are assigning a string to the variable input in

y_n = input = ("Do you want to save these changes?
y/n
")

input now has the value of 'Do you want to save these changes? y/n '

However, you are also calling the built-in function input in

linechoice = input("What password do you want to delete?:
")

Consider changing the name of your variable to avoid these conflicts.

Looking at the context of the program, you are probably expecting

y_n = input("Do you want to save these changes?
y/n
")

instead of

y_n = input = ("Do you want to save these changes?
y/n
")