Hello guys, I'd like to ask you a little question about a script I did and isn't working properly. It is one excercise from googles python classes < http://code.google.com/edu/languages/google-python-class/set-up.html>
I'm using python 2.5 because it's the one works with Google App Engine < https://developers.google.com/appengine/docs/python/gettingstarted/> This is the problem: ##########################3 # B. front_x # Given a list of strings, return a list with the strings # in sorted order, except group all the strings that begin with 'x' first. # e.g. ['mix', 'xyz', 'apple', 'xanadu', 'aardvark'] yields # ['xanadu', 'xyz', 'aardvark', 'apple', 'mix'] # Hint: this can be done by making 2 lists and sorting each of them # before combining them. # This is the code I did -- Romulo. def front_x(words): x_list = [] for string in words: if string[0]=='x': x_list.append(string) words.remove(string) sorted(words) sorted(x_list) x_list.extend(words) return x_list ############################## The problem with this code is that it only gets the first word beginning with x and the others remaisn on the original list, sorted at the end. I've tested on terminal many parts of the code and it whas fine, but when I run it complete, it does not work. Following is the solution of the problem. I can understand it, I just can't understand why my code does not work. ############################# def front_x(words): x_list = [] other_list = [] for w in words: if w.startswith('x'): x_list.append(w) else: other_list.append(w) return sorted(x_list) + sorted(other_list) ############################## To download all the exercises, access: http://code.google.com/edu/languages/google-python-class/google-python-exercises.zip Thank y'all.
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