more content was added to loops

basics/loops.md

@@ -133,6 +133,29 @@ immediately.
 >>>
 ```
 
+While with a condition
+
+```python
+>>> cont = 10
+>>> while (cont >= 0):
+... print(cont)
+... cont -= 1
+...
+10
+9
+8
+7
+6
+5
+4
+3
+2
+1
+0
+>>>
+```
+
+
 ## Until loops
 
 Python doesn't have until loops. If we need an until loop, we can use
@@ -212,6 +235,7 @@ how about you
 >>>
 ```
 
+
 Without the comments, that's only two simple lines, and one variable.
 Much better than anything else we tried before.
 
@@ -232,6 +256,7 @@ Here the `in` keyword is just a part of the for loop and it has a
 different meaning than it would have if we had `thing in stuff` without
 a `for`. Trying to do `for (thing in stuff):` creates an error.
 
+
 Right now the while loop version might seem easier to understand for
 you, but later you'll realize that for loops are much easier to work
 with than while loops and index variables, especially in large projects.
@@ -260,9 +285,30 @@ c
 >>>
 ```
 
+You can print the multiplication tables.
+
+```python
+>>> table = 2
+>>> for i in range(1, 11):
+... print(table,"x", i, "=",(table*i))
+...
+2 x 1 = 2
+2 x 2 = 4
+2 x 3 = 6
+2 x 4 = 8
+2 x 5 = 10
+2 x 6 = 12
+2 x 7 = 14
+2 x 8 = 16
+2 x 9 = 18
+2 x 10 = 20
+>>>
+```
+
 If we can for loop over something, then that something is **iterable**.
 Lists, tuples and strings are all iterable.
 
+
 There's only one big limitation with for looping over lists. We
 shouldn't modify the list in the for loop. If we do, the results can
 be surprising: