int object is not iterable

Question

inp   int input  Enter a number      for i in inp      n   n   i      print  n        throws an error   int  object is not iterable  I wanted to find out the total by adding each digit  for eg  110  1   1   0   2  How do I do that   Thanks

User · Answer

Well  you want to process the string representing the number  iterating over the digits  not the number itself  which is an abstract entity that could be written differently  like  CX  in Roman numerals or  0x6e  hexadecimal  both for 110  or whatever    Therefore   inp   input  Enter a number     n   0 for digit in inp       n   n   int digit       print n    Note that the n   0 is required  someplace before entry into the loop   You can t take the value of a variable which doesn t exist  and the right hand side of n   n   int digit  takes the value of n   And if n does exist at that point  it might hold something completely unrelated to your present needs  leading to unexpected behaviour  you need to guard against that   This solution makes no attempt to ensure that the input provided by the user is actually a number  I ll leave this problem for you to think about  hint  all that you need is there in the Python tutorial

User · Answer

maybe you re trying to for i in range inp   This will print your input value  inp  times  to print it only once  follow  for i in range inp - inp   1   print i  I just had this error because I wasn t using range

User · Answer

Side note  if you want to get the sum of all digits  you can simply do  print sum int digit  for digit in raw input  Enter a number

User · Answer

Take your input and make sure it s a string so that it s iterable   Then perform a list comprehension and change each value back to a number   Now  you can do the sum of all the numbers if you want   inp    int i  for i in str input  Enter a number      print sum inp    Or  if you really want to see the output while it s executing   def printadd x y       print x y     return x y  inp    int i  for i in str input  Enter a number      reduce printadd inp

User · Answer

for    in statements expect you to use a type that has an iterator defined    A simple int type does not have an iterator

User · Answer

You can try to change  for i in inp  into for i in range 1 inp   Iteration doesn t work with a single int  Instead  you need provide a range for it to run

User · Answer

Don t make it a int    but make it a range   will solve this problem   inp   range input  Enter a number

User · Answer

try   for i in str inp     That will iterate over the characters in the string representation  Once you have each character you can use it like a separate number

User · Answer

One possible answer to OP-s question   I wanted to find out the total by adding each digit  for eg  110  1   1   0   2  How do I do that    is to use built-in function divmod    num   int input  Enter a number     nums sum   0  while num      num  reminder   divmod num  10      nums sum    reminder

User · Answer

First  lose that call to int - you re converting a string of characters to an integer  which isn t what you want  you want to treat each character as its own number   Change   inp   int input  Enter a number       to   inp   input  Enter a number      Now that inp is a string of digits  you can loop over it  digit by digit   Next  assign some initial value to n -- as you code stands right now  you ll get a NameError since you never initialize it   Presumably you want n   0 before the for loop   Next  consider the difference between a character and an integer again   You now have   n   n   i    which  besides the unnecessary semicolon  Python is an indentation-based syntax   is trying to sum the character i to the  integer n -- that won t work   So  this becomes  n   n   int i    to turn character  7  into integer 7  and so forth

User · Answer

As ghills had already mentioned  inp   int input  Enter a number      n   0 for i in str inp       n   n   int i       print n   When you are looping through something  keyword is  IN   just always think of it as a list of something  You cannot loop through a plain integer  Therefore  it is not iterable

[python] int object is not iterable?

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