How i find right passwords in file?

I have file passwords.txt

i read file with .readlines() function.

Passwords is normal text and numbers. And text and numbers and @%# etc.. symbols.

I want found wrong passwords with symbols in this file.

Code right now:

file = open("password.txt","r") # Open file
contain = file.readlines() # Read file

errorsymbol_list = ['%','-','+',')','_','@','#']

for i in contain:

if i.find in error_list: # This if Statement is my error.
print(i, "Contain wrong symbols.")
else:
print(i,"is right to password. :)")

file.close()