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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 Control Flow
Goals of this lesson
Students will learn
Step1:  Nesting If Statements
Any conditional statements within others are called 'nested'
Step2:  Else Statements
It is also very helpful to specify code that we want to run if a condition is NOT met
Else statements in python always follow if statements, and consist of the following syntax
if (condition X)
Step3:  Else If & Sequential If Statements
We may also want to specify a series of conditions
Python always evaluates conditions on the same nest level in order, from top to bottom 
Elif means 'else if' -- only run this statement if the previous if statement condition was not met, and the condition following is met
Sequential if statements on the same level will run if the statement condition is met, regardless of the previous
Step4:  Loops
Looping is a great way to apply the same operation to many pieces of data
Looping through a list
Step5:  Looping a certain number of times
Step6:  Fancly looping with enumerate
Step7:  Nested loops
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Python Code:
myVar = 25
if myVar > 10:
    print('Above 10!')
Explanation: Control Flow
Goals of this lesson
Students will learn:
How to use if/else and for loops in python
How to indent code correctly in python
Indenting in python
Python, unlike R, is strict about indentation! 
Indentations in python often have bearing on the order in which they are executed, and switching indentation can change how code runs (or break it)
Coming from R, indentation might seem annoying at first, but eventually this can help with code readability 
Ultimately, python is trying to help us stay organized
If statements
If statements in python are the equivalent of the following English: "If condition X is met, then do action Y"
If statements in python consist of the following syntax
if (condition X):
    actions...
End of explanation
if myVar > 5:
    print('Above 10!')
    if myVar > 20:
        print('Above 20!')
Explanation: Nesting If Statements
Any conditional statements within others are called 'nested'
End of explanation
myVar2 = 'dog'
if myVar2 == 'cat':
    print('meow')
else:
    print('woof')
Explanation: Else Statements
It is also very helpful to specify code that we want to run if a condition is NOT met
Else statements in python always follow if statements, and consist of the following syntax
if (condition X):
    actions...
 else:
    actions...
End of explanation
myVar2 = 'dog'
if len(myVar2) == 3:
    print('3 letters long')
elif myVar2 == 'dog':
    print('woof')
else:
    print('unknown animal')
myVar2 = 'dog'
if len(myVar2) == 3:
    print('3 letters long')
if myVar2 == 'dog':
    print('woof')
else:
    print('unknown animal')
Explanation: Else If & Sequential If Statements
We may also want to specify a series of conditions
Python always evaluates conditions on the same nest level in order, from top to bottom 
Elif means 'else if' -- only run this statement if the previous if statement condition was not met, and the condition following is met
Sequential if statements on the same level will run if the statement condition is met, regardless of the previous
End of explanation
nums = [2,3,4,-1,7]
for number in nums:
    print(number)
Explanation: Loops
Looping is a great way to apply the same operation to many pieces of data
Looping through a list
End of explanation
for i in range(10):
    print(i)
Explanation: Looping a certain number of times
End of explanation
stringList = ['banana', 'mango', 'kiwi', 'blackberry']
# fancy looping with enumerate()
for index, item in enumerate(stringList):
    print(index, item)
Explanation: Fancly looping with enumerate
End of explanation
for i in stringList:
    for j in range(4):
        print(i, j)
Explanation: Nested loops
End of explanation
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