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    Lab 5 Warm-up
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# Lab 5, Warm-up
<img src="stretching.gif" style="width:100px" alt="A boy and a girl wearing gym clothes and stretching their arms to one side. They are warming up.">

- [Here is the worksheet as a google doc](https://docs.google.com/document/d/1szysM4Ytr2BaOSo2QaTHTPmLW9YH5jPCJfxulNcL3Ck/edit?usp=sharing)
- Open the document, then File -> Make a Copy. 
- Then you can edit your copy with your answers.
{{--
## We'll start with some simple loops to get warmed up.

In examples 1-3, predict the output of each code snippet.

### Example 1: Repeating code a certain number of times
```py
for _ in range(5):
     print('cs')
```
### Example 2a: Stepping through each number in range
```py
for num in range(4):
     print(num)
```
### Example 2b: Stepping <span style="color:#b64343">backward</span> through each number in range
```py
for num in range(4,0,-1):
     print(num)
```
### Example 3a: Stepping through each letter in a string
```py
for letter in 'happy':
     print(letter)
```
### Example 3b: Stepping through the string a different way
```py
for letter in 'happy'[::-1]:
     print(letter)
```

### Example 4:  Given the function `addEmUp`, predict the outcome of the two invocations below.
```py
# accumulator (gathering stuff up inside the loop)
def addEmUp(number):
     """ What would you write here for the docstring?"""
     count = 0
     for num in range(number+1):
          count = count + num # accumulating here
     return count
```
```py
>>> addEmUp(0)

>>> addEmUp(4)
```

### OPTIONAL Example 5: Given the function `counter`, predict the outcome of the two invocations below.
```py
# count letter occurrences
def counter(word,letter):
     """ What would you write here for the docstring?
     """
     count = 0
     for let in word:
          if let == letter:
              count = count + 1
     return count
```
```py
>>> counter('cocoa','o')

>>> counter('cocoa','x')
```
--}}
{{-- commenting out for Spring 2021, short lab --}}
{{--

### OPTIONAL Example 6: Given the function `search`, predict the outcome of the invocations below.
```py
def search(word,letter):      
     """

     """      
     for let in word:           
         if let == letter:               
               return True      
     return False

```

```py
>>>  search('coke','k') 

>>>  search('coke','a')

>>>  search('metropolitan','m')

```

### OPTIONAL Example 6: ooh!  A nested loop! (one loop inside another)
Predict the output of the code snippet below:
```py
for letter1 in 'yes':
    for letter2 in 'no':
        print(letter1 + letter2)
```

--}}

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