CODEWITHSUNDEEP
python
user3500257
user3500257

Reputation: 31

Encrypting a string 4

def main():
  inFile = open ('input.txt', 'r')
  fileContent = inFile.read()
  choice = input('Do you want to encrypt or decrypt? (E / D): ')
  for i in fileContent:
    if (choice == 'E'):
      for i in range(0, len(str), 2):
        even_str = str[i]
      for i in range(1, len(str), 2):
        odd_str = str[i]
      outFile = open("output.txt", "w")
      outFile.write(even_str)
      outFile.write(odd_str)
      outFile.write(encrypted_str)
      print('even_str = ',even_str)
      print('odd_string = ',odd_str)
      print('encrypted_str = ',encrypted_str)
      outfile.close()
    if (choice != 'E' and choice != 'D'):
      print ('')
      print ('Wrong input. Bye.')
      return
  inFile.close()
main()

Trying to encrypt a string and add the odd and even character together but I keep getting this error. I have a file set up to be tested but it appears to not be working.

Traceback (most recent call last):
  File "C:/Python33/CS303E/Cipher.py", line 41, in <module>
    main()
  File "C:/Python33/CS303E/Cipher.py", line 24, in main
    for i in range(0, len(str), 2):
TypeError: object of type 'type' has no len()

Upvotes: 0

Views: 57

Answers (2)

Gabe
Gabe

Reputation: 86798

You keep using str (the name of the type representing a string) when you should be using fileContent (the name of the variable containing your input string).

Upvotes: 1

Danil Speransky
Danil Speransky

Reputation: 30473

str is a type (string, also you may think about it as about constructor), it's part of the language, and you don't have such variable. Maybe you want something like this:

for i in range(0, len(fileContent), 2):

Upvotes: 0

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