reverse a string or number in python

1'hello world'[::-1]
2'dlrow olleh'

1#linear
2
3def reverse(s): 
4  str = "" 
5  for i in s: 
6    str = i + str
7  return str
8
9#splicing
10'hello world'[::-1]
11
12#reversed & join
13def reverse(string): 
14    string = "".join(reversed(string)) 
15    return string
16  
17 
18  

1# Python string/number reverser
2example_number = 12143
3example_string = "Hello there"
4
5def reverse(thing): 
6    thing = str(thing) # convert it to a string, just in case it was a number
7    list_of_chars = [char for char in thing]
8    reversed_list_of_chars = []
9    x = -1
10    
11    for char in list_of_chars:
12      reversed_list_of_chars.append(list_of_chars[x])
13      x += -1
14    
15    reversed_thing = ''.join(reversed_list_of_chars)
16    
17    return reversed_thing
18    # Or alternatively do:
19    print(reversed_thing)
20
21# Run it by doing this
22reverse(example_number)
23reverse(example_string)

1# Python string/number reverser
2# Kinda too much code, so don't use this, use the other examples under this answer.
3example_number = 12143
4example_string = "Hello there"
5
6def reverse(thing): 
7    thing = str(thing) # convert it to a string, just in case it was a number
8    list_of_chars = [char for char in thing]
9    reversed_list_of_chars = []
10    x = -1
11    
12    for char in list_of_chars:
13      reversed_list_of_chars.append(list_of_chars[x])
14      x += -1
15    
16    reversed_thing = ''.join(reversed_list_of_chars)
17    
18    return reversed_thing
19    # Or alternatively do:
20    print(reversed_thing)
21
22# Run it by doing this
23reverse(example_number)
24reverse(example_string)