add a space between each word in the string

Question

I've been trying to make this more challenging for myself but I couldn't find a way to achieve this goal. So I wonder if its possible to separate words that have no space betweenThemLikeThisJustInASingleString Here's my code:

def translate_morse(string):
    morse_a = {
    'a':'.-','b':'-...','c':'-.-.','d':'-..','e':'.','f':'..-.','g':'--.','h':'....','i':'..','j':'.---','k':'-.-','l':'.-..',
    'm':'--','n':'-.','o':'---','p':'.--.','q':'--.-','r':'.-.','s':'...','t':'-','u':'..-','v':'...-','w':'.--','x':'-..-',
    'y':'-.--','z':'--..',1:'.----',2:'..---',3:'...--',4:'....-',5:'.....',6:'-....',7:'--...',8:'---..',9:'----.',0:'-----'}
    translated = ""
    for i in string.split(' '):
        for key, value in morse_a.iteritems():
            if i == value:
                translated += key
    print translated

print """

    ###################################
    #                                 #
    #   Morse Alphabet Translator     #
    #   Author: Blackwolf             #
    #   Date: 2016-29-05              #
    #                                 #
    ###################################
    #                                 #
    #             USAGE:              #
    #  After each morse letter you    #
    #  will need to seperate (space)  #
    #  each letter                    #
    ###################################

"""
finished = False
while finished != True:
    translate_morse(raw_input("Enter morse: "))
    ask_ifFinished = raw_input('Are you done? (Y/N): ').lower()
    if ask_ifFinished == 'y':
        finished = True

Answer 1

If you want to insert a space before every capital letter:

import re
string = 'betweenThemLikeThisJustInASingleString'
print(re.sub('([A-Z])', r' \1', string))

Output:

between Them Like This Just In A Single String

There's no perfect solution for splitting up words where the boundary isn't marked. How can the computer tell that singlestring should be split into single string and not sing lest ring ( lest is an English word if you're not aware)? There are heuristics you could apply to make decent guesses but they're complicated and limited. You could also list all the possible solutions but that will also be difficult at your level.

Answer 2

First post on stackoverflow :)

Was looking at how to solve this problem for something else and figured I'd share it.

REQUIREMENTS

• Put spaces before each capital letter in a string.
• Here's an implementation without using 're'

    def spacer(str):

    sentence = []                 # create empty list

    sentence.append(str[0])       # put first letter in list. First letter doesn't need a space.
    for char in str[1::]:         # begin iteration after first letter
        if char.islower():
            sentence.append(char) # if character is lower add to list
        elif char.isupper():
            sentence.append( " ") # if character is upper add a space to list
            sentence.append(char) # then add the upper case character to list  
    result = ''.join(sentence)    # use () join to convert the list to a string
    return result                 # return end result

RUN IT

string='betweenThemLikeThisJustInASingleString'
spacer(string)

OUTPUT

'between Them Like This Just In A Single String'