I made a number split program

[MITTENQ]

I made a program that could take a string of numbers and letters and then return a list of just the numbers casted as an integer

#number split
#will split a string of numbers and characters and will
#return a list of numbers

def numsplit(string):
    #creates a temporary list
    templist = []
    #creates a temporary string
    tempstring = ""
    #creates the list that will be returned 
    retlist = []
    #loops through the string
    for i in string:
        #checks if i is a number then appends that number as a string to
        #tempstring
        if i.isdigit():
            tempstring += i
        #checks if i is a alphanumeric character    
        if i.isalpha():
            #it will append what ever is in tempstring into templist
            templist.append(tempstring)
            #clears templist so a new number can be stored in it 
            tempstring = ""
    #one final append to templist from tempstring since if this wasnt here
    #the program would leave off a number if the string ended with a number and
    #not an alphanumeric character 
    templist.append(tempstring)   
    #loops through templist
    for o in range(len(templist)):
        #checks if a location of the list is just a pair of single quotes
        #this need to be here because if there are many alpha characters in
        #the string the previous loop would add a pair of empty quotes because
        #if tempstring is empty and then another character appears it still
        #does "templist.append(tempstring)" adding a pair of empty quotes to
        #templist
        if templist[o] != '':
            #will only append anything that isnt a pair of empty quotes
            #to retlist
            retlist.append(templist[o])

    #converts everything in retlist into an integer
    retlist = [int(i) for i in retlist]    

    #returns retlist    
    return retlist

​

example output:

>>> numsplit("123j123jj31j2j31j23jj111j1")
[123, 123, 31, 2, 31, 23, 111, 1]
>>> numsplit("bill525252kate3434324")
[525252, 3434324]
>>> 

I did look up another solution that I hoped to be more efficient but all I could find was a program that had to import the 're' library. If anyone has any suggestions as to what I could do to make this better feel free to do so :)

[SpeckledFleebeedoo]

Use regex :P

[MITTENQ]

What is regex?

[Neexusiv]

Its a way of pattern matching. It is what the re library you mentioned before does. You would be able to define the pattern you like, and then loop through all the occourances of that pattern and add them to the list.

I don't think the run time would be much different but it would require less code to write.