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Q&A Create a list of Niven numbers in Python

The way your code handles the variable i within the for loop seems to indicate a wrong understanding of the meaning of for i in range(1,n+2): range(1,n+2) will provide an object of type range. ...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
#2: Post edited by user avatar Dirk Herrmann‭ · 2022-08-23T19:47:12Z (over 2 years ago)
  • The way your code handles the variable `i` within the `for` loop seems to indicate a wrong understanding of the meaning of
  • for i in range(1,n+2):
  • `range(1,n+2)` will provide an object of type `range`. This object represents the sequence of numbers from `1` to `n+2`. At the begin of each iteration the next element from that sequence is fetched and assigned to `i`, _no matter what happened to `i` in between_.
  • In other words, you can not "skip" elements from the `range` object just by incrementing `i` within the `for` loop. You can see this with the help of the following example code:
  • for i in range(3):
  • print("Value of i at start of loop body: i = ", i)
  • i += 20
  • print("Value of i after modification: i = ", i)
  • The way your code handles the variable `i` within the `for` loop seems to indicate a wrong understanding of the meaning of
  • for i in range(1,n+2):
  • `range(1,n+2)` will provide an object of type `range`. This object represents the sequence of numbers from `1` to (not including) `n+2`. At the begin of each iteration the next element from that sequence is fetched and assigned to `i`, _no matter what happened to `i` in between_.
  • In other words, you can not "skip" elements from the `range` object just by incrementing `i` within the `for` loop. You can see this with the help of the following example code:
  • for i in range(3):
  • print("Value of i at start of loop body: i = ", i)
  • i += 20
  • print("Value of i after modification: i = ", i)
#1: Initial revision by user avatar Dirk Herrmann‭ · 2022-08-23T19:45:20Z (over 2 years ago)
The way your code handles the variable `i` within the `for` loop seems to indicate a wrong understanding of the meaning of

    for i in range(1,n+2):

`range(1,n+2)` will provide an object of type `range`.  This object represents the sequence of numbers from `1` to `n+2`.  At the begin of each iteration the next element from that sequence is fetched and assigned to `i`, _no matter what happened to `i` in between_.

In other words, you can not "skip" elements from the `range` object just by incrementing `i` within the `for` loop.  You can see this with the help of the following example code:

    for i in range(3):
        print("Value of i at start of loop body: i = ", i)
        i += 20
        print("Value of i after modification: i = ", i)