Definite iteration:
```python
collection = ['hello', 'goodbye']
for item in collection:
    print(item) 
```

Indefinite iteration:
```python
x = 1
while x < 10:
    print(x, " is less than 10.")
    x = x + 1


Examples of Definite and Indefinite Iteration

- Definite iteration has a set of instructions that are repeated a specific number of times that is specified in advance. It is implemented by using count-controlled loops, such as for loops

- Indefinite iteration has a set of instructions that is repeated until a condition is met. It is implemented by using condition-controlled loops, such as while loops.

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The use of a for loop can allow for the programmer to make repetitive outputs or actions. The for loop will search through an iterable in order to do something with each element in it.

```python
for _ in range(5):
    print("This will print 5 times.")
```
Result:
```
This will print 5 times.
This will print 5 times.
This will print 5 times. 
This will print 5 times. 
This will print 5 times. 
```


For Loops

While loops can allow a programmer to execute the same block of code repeatedly while a condition evaluates to true. The condition may be a result of a comparison, or the value of a variable. Non-zero variables and non-empty collections will evaluate to true, while the opposite will evaluate to false.

```python
x = 5
while x > 0:
   print(f"{x} seconds to launch")
   x = x - 1
print("Take Off!")
```
Result:
```
5 seconds to launch
4 seconds to launch
3 seconds to launch
2 seconds to launch
1 second to launch
Take Off!
```

While Loops

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