While loop

[Amit_31]

name=''
eggs=0
pony=0.0
So why we write " while name:"
Instead of " while name=='': "
What are these Truthy and Falsey values?
And what are the rules for writing name:
Instead of name==''.

[Gribouillis]

When you write

while expression:
    ...

python evaluates expression as a boolean value (which can only be True or False). The result is the same as using bool(expression). Here are a few examples of using bool()

>>> bool('')
False
>>> bool('hello')
True
>>> bool([])
False
>>> bool([1, 2, 3])
True
>>> bool(0)
False
>>> bool(7)
True

[ddanbe]

>>> eggs = 6
>>> # means the same as: make yourself a box, write eggs on the side and store the number 6 in it
>>> # = is called an assignment operator: assign a value to a variable
>>> eggs == 5
False
>>> # == is a logical comparision operator
>>> # because we assigned the value 6 to eggs, the expression eggs == 5 returns False

[Sean Francis]

Loops and conditional expressions will only execute the code inside them when their conditions are True. Once their conditions result into False, they will stop executing the code inside them.