Python: TypeError: 'int' object is not iterable - in For Loop

Question

OK, I have looked at many questions to do with this topic yet I couldn't find a specific answer to my queries. I am having and TypeError which has been bothering me. In my code I've been trying to hash a string very naively but my challenge is to do it without any hash libraries and with basic libraries such as 'random' or 'time' (don't know why that is useful). Here is my code so far:

import random
char_array = "Hello World!"
hash_lvl = random.getrandbits(15)

def hash (lvl, string, len_string):
    a = 9
    b = 2
    new_array = []

    for d in range(0, len_string):
        new_array.extend(d)
    for c in range(0, len_string):
        globals()['string%s' % c] = (lvl/a)+(lvl*b)
        a=a-1
        b=b+1

print(char_array[0:])

if len(char_array) > 20:
    print("You may not hash after 20 digits.")
elif len(char_array) < 21:
    print("Hashing:")
    hash(hash_lvl, char_array, len(char_array))

The for loops inside the functions have caused this so if you could get back to me I would be grateful.

Ilja Everilä · Accepted Answer · 2016-04-14 20:15:32Z

2

Replace

for d in range(0, len_string):
    new_array.extend(d)

with

for d in range(0, len_string):
    new_array.append(d)

list.extend extends a list in place, list.append adds an item at the end.

answered Apr 14, 2016 at 20:15

Ilja Everilä

53.4k9 gold badges138 silver badges142 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

ballade4op52 · Accepted Answer · 2016-04-18 20:19:44Z

1

The extend method is expecting an iterable (e.g. a list, tuple, or string), which would add each of the items in the iterable to the end of the list. The append method adds a single item to the end of the list (an iterable or non-iterable).

edited Apr 18, 2016 at 20:19

answered Apr 14, 2016 at 20:20

ballade4op52

2,2675 gold badges29 silver badges44 bronze badges

Collectives™ on Stack Overflow

Python: TypeError: 'int' object is not iterable - in For Loop

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related