Changing for loop to while loop for non-range for loops












-2















for item in lst[0:]:

    temp1 = int(item[1])

    temp2 = int(item[2])


Here is a block of code representing the item for each element in the list.
How would I change it so it searches through each item in the list but using a while loop?






python for-loop while-loop







share|improve this question


















  • 1





    This is perfectly fine as a for loop. Why mess with that? And what have you tried? What specifically do you need help with?

    – Carcigenicate
    Nov 19 '18 at 3:52


















-2















for item in lst[0:]:

    temp1 = int(item[1])

    temp2 = int(item[2])


Here is a block of code representing the item for each element in the list.
How would I change it so it searches through each item in the list but using a while loop?






python for-loop while-loop







share|improve this question


















  • 1





    This is perfectly fine as a for loop. Why mess with that? And what have you tried? What specifically do you need help with?

    – Carcigenicate
    Nov 19 '18 at 3:52
















-2












-2








-2








for item in lst[0:]:

    temp1 = int(item[1])

    temp2 = int(item[2])


Here is a block of code representing the item for each element in the list.
How would I change it so it searches through each item in the list but using a while loop?






python for-loop while-loop







share|improve this question














for item in lst[0:]:

    temp1 = int(item[1])

    temp2 = int(item[2])


Here is a block of code representing the item for each element in the list.
How would I change it so it searches through each item in the list but using a while loop?






python for-loop while-loop




python for-loop while-loop






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 19 '18 at 3:47









John SmithJohn Smith

185




185








  • 1





    This is perfectly fine as a for loop. Why mess with that? And what have you tried? What specifically do you need help with?

    – Carcigenicate
    Nov 19 '18 at 3:52
















  • 1





    This is perfectly fine as a for loop. Why mess with that? And what have you tried? What specifically do you need help with?

    – Carcigenicate
    Nov 19 '18 at 3:52










1




1





This is perfectly fine as a for loop. Why mess with that? And what have you tried? What specifically do you need help with?

– Carcigenicate
Nov 19 '18 at 3:52







This is perfectly fine as a for loop. Why mess with that? And what have you tried? What specifically do you need help with?

– Carcigenicate
Nov 19 '18 at 3:52














1 Answer
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oldest

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Here's what you have:



for item in lst:

    temp1 = int(item[1])

    temp2 = int(item[2])


If you wanted to use list indexes instead of the list items themselves, you could instead do this:



for idx in range(len(lst)):

    temp1 = int(lst[idx][1])

    temp2 = int(lst[idx][2])


where range() essentially returns a list [1, 2, 3, ...] that gets iterated through (the actual way it works is more complicated, but you get the idea). Making a while loop is more or less the same, except that you have to do the iteration yourself using arithmetic:



idx = 0

end = len(lst)

while idx < end:

    temp1 = int(lst[idx][1])

    temp2 = int(lst[idx][2])

    idx += 1





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    Here's what you have:



    for item in lst:
    
    temp1 = int(item[1])
    
    temp2 = int(item[2])


    If you wanted to use list indexes instead of the list items themselves, you could instead do this:



    for idx in range(len(lst)):
    
    temp1 = int(lst[idx][1])
    
    temp2 = int(lst[idx][2])


    where range() essentially returns a list [1, 2, 3, ...] that gets iterated through (the actual way it works is more complicated, but you get the idea). Making a while loop is more or less the same, except that you have to do the iteration yourself using arithmetic:



    idx = 0
    
end = len(lst)
    
while idx < end:
    
    temp1 = int(lst[idx][1])
    
    temp2 = int(lst[idx][2])
    
    idx += 1





    share|improve this answer




























      0














      Here's what you have:



      for item in lst:
      
    temp1 = int(item[1])
      
    temp2 = int(item[2])


      If you wanted to use list indexes instead of the list items themselves, you could instead do this:



      for idx in range(len(lst)):
      
    temp1 = int(lst[idx][1])
      
    temp2 = int(lst[idx][2])


      where range() essentially returns a list [1, 2, 3, ...] that gets iterated through (the actual way it works is more complicated, but you get the idea). Making a while loop is more or less the same, except that you have to do the iteration yourself using arithmetic:



      idx = 0
      
end = len(lst)
      
while idx < end:
      
    temp1 = int(lst[idx][1])
      
    temp2 = int(lst[idx][2])
      
    idx += 1





      share|improve this answer


























        0












        0








        0







        Here's what you have:



        for item in lst:
        
    temp1 = int(item[1])
        
    temp2 = int(item[2])


        If you wanted to use list indexes instead of the list items themselves, you could instead do this:



        for idx in range(len(lst)):
        
    temp1 = int(lst[idx][1])
        
    temp2 = int(lst[idx][2])


        where range() essentially returns a list [1, 2, 3, ...] that gets iterated through (the actual way it works is more complicated, but you get the idea). Making a while loop is more or less the same, except that you have to do the iteration yourself using arithmetic:



        idx = 0
        
end = len(lst)
        
while idx < end:
        
    temp1 = int(lst[idx][1])
        
    temp2 = int(lst[idx][2])
        
    idx += 1





        share|improve this answer













        Here's what you have:



        for item in lst:
        
    temp1 = int(item[1])
        
    temp2 = int(item[2])


        If you wanted to use list indexes instead of the list items themselves, you could instead do this:



        for idx in range(len(lst)):
        
    temp1 = int(lst[idx][1])
        
    temp2 = int(lst[idx][2])


        where range() essentially returns a list [1, 2, 3, ...] that gets iterated through (the actual way it works is more complicated, but you get the idea). Making a while loop is more or less the same, except that you have to do the iteration yourself using arithmetic:



        idx = 0
        
end = len(lst)
        
while idx < end:
        
    temp1 = int(lst[idx][1])
        
    temp2 = int(lst[idx][2])
        
    idx += 1






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 19 '18 at 3:57









        Green Cloak GuyGreen Cloak Guy

        2,5031720




        2,5031720






























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