Revision history [back]

Some comments:

• Parentheses are not balanced in the first line of code in the question. Remove an extraneous opening parenthesis (or add a closing parenthesis).

• The Python built-in function input can be used to ask for user input. This function does not work in SageCell.

• The function sage_input is very different. It helps finding what Sage input would give some object. See the documentation for sage_input.

• Sage has a built-in function for finding the next prime.

  sage: 12.next_prime()
  13
  sage: next_prime(12)
  13
  

• Sage has a function for listing primes in a given range.

  sage: prime_range(12, 30)
  [13, 17, 19, 23, 29]
  

• You can use "interacts" in Sage, see https://wiki.sagemath.org/interact.