|  | 
| 4 | 4 | More Control Flow Tools | 
| 5 | 5 | *********************** | 
| 6 | 6 | 
 | 
| 7 |  | -Besides the :keyword:`while` statement just introduced, Python uses the usual | 
| 8 |  | -flow control statements known from other languages, with some twists. | 
|  | 7 | +As well as the :keyword:`while` statement just introduced, Python uses a few more | 
|  | 8 | +that we will encounter in this chapter. | 
| 9 | 9 | 
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| 10 | 10 | 
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| 11 | 11 | .. _tut-if: | 
| @@ -163,14 +163,21 @@ arguments.  In chapter :ref:`tut-structures`, we will discuss in more detail abo | 
| 163 | 163 | :keyword:`!break` and :keyword:`!continue` Statements, and :keyword:`!else` Clauses on Loops | 
| 164 | 164 | ============================================================================================ | 
| 165 | 165 | 
 | 
| 166 |  | -The :keyword:`break` statement, like in C, breaks out of the innermost enclosing | 
|  | 166 | +The :keyword:`break` statement breaks out of the innermost enclosing | 
| 167 | 167 | :keyword:`for` or :keyword:`while` loop. | 
| 168 | 168 | 
 | 
| 169 |  | -Loop statements may have an :keyword:`!else` clause; it is executed when the loop | 
| 170 |  | -terminates through exhaustion of the iterable (with :keyword:`for`) or when the | 
| 171 |  | -condition becomes false (with :keyword:`while`), but not when the loop is | 
| 172 |  | -terminated by a :keyword:`break` statement.  This is exemplified by the | 
| 173 |  | -following loop, which searches for prime numbers:: | 
|  | 169 | +A :keyword:`!for` or :keyword:`!while` loop can include an :keyword:`!else` clause. | 
|  | 170 | + | 
|  | 171 | +In a :keyword:`for` loop, the :keyword:`!else` clause is executed | 
|  | 172 | +after the loop reaches its final iteration. | 
|  | 173 | + | 
|  | 174 | +In a :keyword:`while` loop, it's executed after the loop's condition becomes false. | 
|  | 175 | + | 
|  | 176 | +In either kind of loop, the :keyword:`!else` clause is **not** executed | 
|  | 177 | +if the loop was terminated by a :keyword:`break`. | 
|  | 178 | + | 
|  | 179 | +This is exemplified in the following :keyword:`!for` loop, | 
|  | 180 | +which searches for prime numbers:: | 
| 174 | 181 | 
 | 
| 175 | 182 |    >>> for n in range(2, 10): | 
| 176 | 183 |    ...     for x in range(2, n): | 
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