Getting an errox when opening a textfile - python-3.x

Question

I want to open a file to edit what's inside with but i get this error
Traceback (most recent call last):
File "C:/Users/user/PycharmProjects/LittleSmashBros/Editeur de niveau.py", line 95, in <module>
fichier = open("niveau1.txt",)
TypeError: Required argument 'flags' (pos 2) not found
This is not my first time coding something but I am pretty new to this. My textfile is in the right file, it worked before. It stopped working when I added the function fichier_temp. If you could find what's the problem and explain how to solve it. This is my code, sorry for the variable name, I am French.
from tkinter import *
from os import *
fenetre = Tk()
fenetre.title("LittleSmashBros")
fenetre.geometry("1110x720")
bgImage = PhotoImage(file="Greenbg.png")
fond = Canvas(fenetre,width=1110,height=720)
fond.place(x=-2,y=-2)
fond.create_image(0,0,image=bgImage,anchor="nw")
fond.create_rectangle(1080,0,1111,720,fill="black")
#Stocke les images dans des variables
platGauche = PhotoImage(file="platGauche.png")
platMilieu = PhotoImage(file="platMilieu.png")
platDroite = PhotoImage(file="platDroite.png")
#Bouton qui définissent le bloc choisi
typeBloc = "V"
couleurB = "black"
def changeBloc(bloc): typeBloc = bloc
def boutonEnfonce(bouton) :
bloc1.config(bg=couleurB)
bloc2.config(bg=couleurB)
bloc3.config(bg=couleurB)
bouton.config(bg="white")
bloc1 = Button(fenetre,image=platGauche,height=21,width=21,relief=FLAT,bg=couleurB,command=lambda : [changeBloc("G"),boutonEnfonce(bloc1)])
bloc2 = Button(fenetre,image=platMilieu,height=21,width=21,relief=FLAT,bg=couleurB,command=lambda : [changeBloc("M"),boutonEnfonce(bloc2)])
bloc3 = Button(fenetre,image=platDroite,height=21,width=21,relief=FLAT,bg=couleurB,command=lambda : [changeBloc("D"),boutonEnfonce(bloc3)])
bloc1.place(x=1082,y=10)
bloc2.place(x=1082,y=41)
bloc3.place(x=1082,y=72)
#Prend les coordonnées de la souris et donne sa position sur la grille
def cordsouris(cord):
global x0,y0
x0 = cord.x
y0 = cord.y
x1 = 0
x2 = 22
y1 = 0
y2 = 22
testx = False
testy = False
colonne = 0
ligne = 0
while testx == False:
if x1 < x0 < x2:
testx = True
colonne = colonne + 1
else:
colonne = colonne + 1
x1 = x1+21
x2 = x2+21
print(colonne)
while testy == False:
if y1 < y0 < y2:
testy = True
ligne = ligne + 1
else:
ligne = ligne + 1
y1 = y1+21
y2 = y2+21
print(ligne)
return (colonne,ligne)
#Créé la ligne a remplacer
def remplace_str_index(ligne,place,remplacement):
texte = fichier.readline(ligne)
return '%s%s%s'%(texte[:place],remplacement,texte[place+1:])
#Copie l'ancien fichier dans un nouveau avec la modification
def fichier_temp():
fichier = open("niveau1.txt")
colonne,ligne = cordsouris()
with open("temp.txt","w")as temp:
nb = 0
for rang in fichier:
nb = nb+1
if nb==ligne: text = remplace_str_index(ligne,colonne-1,typeBloc)
else : text = rang
temp.write(text)
print(rang)
print(text)
fichier.close()
os.remove("niveau1.txt")
os.rename("temp.txt","niveau1.txt")
#Détecte le click et effectue le changement de bloc
fond.bind("<Button 1>",fichier_temp)
#Place l'image en fonction du fichier texte
fichier = open("niveau1.txt",)
x=0
y=0
for rang in fichier:
for caractere in rang:
if caractere=="S":
fond.delete(fond.find_closest(x,y))
if caractere=="G":
fond.create_image(x,y,image=platGauche,anchor="nw")
if caractere=="M":
fond.create_image(x,y,image=platMilieu,anchor="nw")
if caractere=="D":
fond.create_image(x,y,image=platDroite,anchor="nw")
x = x+21
x = 0
y = y+21
fichier.close()
fenetre.mainloop()

Answer 1

This is exactly why you should never use from X import *.
from os import * overridden the builtin open in Python with os.open (which, unlike the builtin open, does not have a mode).
Either remove the star import or provide a flag like you have in the other places you used os.open.

Answer 2

You need to provide the file open mode
open("niveau1.txt", "r")

Answer 3

This is the problem:
from os import *
It also imports os.open which now overrides the builting open.
If you only import the parts you need from os it will work fine.