Pythob practice

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>>> print "Hello Word!"

Hello Word!

>>> if(foo)

  File "", line 1

    if(foo)

          ^

SyntaxError: invalid syntax

>>> f=true

Traceback (most recent call last):

  File "", line 1, in

NameError: name 'true' is not defined

>>> f=1

>>> if f:

...     print "f is 1"

... 

f is 1

>>> if f:

...     print "f is 1"

... else:

...     print "i don't know"

... 

f is 1

>>> """

... multi

... line

... comment

... """

'\nmulti\nline\ncomment\n'

>>> d = None

>>> numbers = [1,2,3,4]

>>> len(numbers)

4

>>> numbers[0]

1

>>> person={}

>>> person["name"]="ikbhal"

>>> person.update({

...     "favourites":[42,"food"],

...     "gender":"male"

... })

>>> person

{'gender': 'male', 'favourites': [42, 'food'], 'name': 'ikbhal'}

>>> person[(44.47, -73)]= "coordinates"

>>> person

{'gender': 'male', 'favourites': [42, 'food'], 'name': 'ikbhal', (44.47, -73): 'coordinates'}

>>> p2= {"name":'Ikbhal', 'gender':'Male'}

>>> p2

{'gender': 'Male', 'name': 'Ikbhal'}

>>> p2.get('name','Anonymous')

'Ikbhal'

>>> p2.values()

['Male', 'Ikbhal']

>>> p2.items()

[('gender', 'Male'), ('name', 'Ikbhal')]

>>> is_python=True

>>> is_python=bool("any object")

>>> is_python

True

>>> animals = "Cats " + "Dogs"

>>> animals += "Rabbits"

>>> name = '%(first)s %(last)s' % {

...     'first':'Ikbhal',

...     'last':'Shaik'}

>>> name

'Ikbhal Shaik'

>>> grade = 82

>>> if grade >= 90:

...     print "A or A+"

... elif grade >= 80:

...     print "B"

... else:

...     print "F"

... 

B

>>> class User(object):

...     pass

... 

>>> class Student(object):

...     def __init__(self, name='Anyonmous')

  File "", line 2

    def __init__(self, name='Anyonmous')

                                       ^

SyntaxError: invalid syntax