In [2]:

    

print "Hello world"


    

    




Hello world

In [10]:

    

True


    

    
Out[10]:





True

In [11]:

    

False


    

    
Out[11]:





False

In [1]:

    

foo = True


    

In [2]:

    

foo


    

    
Out[2]:





True

In [2]:

    

2+2


    

    
Out[2]:





4

In [3]:

    

2*2


    

    
Out[3]:





4

In [4]:

    

"ala ma kota"


    

    
Out[4]:





'ala ma kota'

In [5]:

    

"ala ma kota"[4:6]


    

    
Out[5]:





'ma'

In [6]:

    

"ala ma kota"[4:]


    

    
Out[6]:





'ma kota'

In [7]:

    

"ala ma kota"[:6]


    

    
Out[7]:





'ala ma'

In [8]:

    

"ala ma kota"[::2]


    

    
Out[8]:





'aam oa'

In [9]:

    

"ala ma kota"[::-1]


    

    
Out[9]:





'atok am ala'

In [32]:

    

"foo bar".split()


    

    
Out[32]:





['foo', 'bar']

In [33]:

    

"foo, bar".split(", ")


    

    
Out[33]:





['foo', 'bar']

In [36]:

    

"foo".upper()


    

    
Out[36]:





'FOO'

In [37]:

    

"FOO".lower()


    

    
Out[37]:





'foo'

In [38]:

    

"foo".capitalize()


    

    
Out[38]:





'Foo'

In [12]:

    

a = [1, 5, 'foo', 7]


    

In [13]:

    

a


    

    
Out[13]:





[1, 5, 'foo', 7]

In [15]:

    

a.append(4)


    

In [16]:

    

a


    

    
Out[16]:





[1, 5, 'foo', 7, 4]

In [17]:

    

a.extend([51, 67])


    

In [18]:

    

a


    

    
Out[18]:





[1, 5, 'foo', 7, 4, 51, 67]

In [44]:

    

foo = {'foo': 'bar', 'kopytko': 'no elo'}


    

In [45]:

    

foo


    

    
Out[45]:





{'foo': 'bar', 'kopytko': 'no elo'}

In [46]:

    

foo['srogie'] = 'grzyby'


    

In [47]:

    

foo


    

    
Out[47]:





{'foo': 'bar', 'kopytko': 'no elo', 'srogie': 'grzyby'}

In [48]:

    

foo.update({'aaa': 'bbb', 'nieee': 'wspaniale'})


    

In [49]:

    

foo


    

    
Out[49]:





{'aaa': 'bbb',
 'foo': 'bar',
 'kopytko': 'no elo',
 'nieee': 'wspaniale',
 'srogie': 'grzyby'}

In [14]:

    

bool(1)


    

    
Out[14]:





True

In [15]:

    

bool(0)


    

    
Out[15]:





False

In [10]:

    

bool('foo')


    

    
Out[10]:





True

In [11]:

    

bool('')


    

    
Out[11]:





False

In [25]:

    

bool([2])


    

    
Out[25]:





True

In [20]:

    

bool([])


    

    
Out[20]:





False

In [21]:

    

bool({'foo': 'bar'})


    

    
Out[21]:





True

In [22]:

    

bool({})


    

    
Out[22]:





False

In [54]:

    

str(4)


    

    
Out[54]:





'4'

In [55]:

    

int('5')


    

    
Out[55]:





5

In [56]:

    

int('no witam')


    

    




---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-56-034fb3425232> in <module>()
----> 1 int('no witam')

ValueError: invalid literal for int() with base 10: 'no witam'

In [12]:

    

if True:
    print "To sie wyswietli"
else:
    print "A to nie"


    

    




To sie wyswietli

In [13]:

    

a = 5
if a == 2:
    print "dwojka"
elif a == 5:
    print "piatka"
else:
    print "jakas liczba"


    

    




piatka

In [23]:

    

for i in xrange(10):
    print i


    

    




0
1
2
3
4
5
6
7
8
9

In [24]:

    

for element in [5, 2, 8]:
    print element


    

    




5
2
8

In [27]:

    

for key, value in {'foo': 'bar', 'kopytko': 'no elo'}.iteritems():
    print key
    print value
    print


    

    




kopytko
no elo

foo
bar

In [28]:

    

[i for i in xrange(10)]


    

    
Out[28]:





[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

In [30]:

    

["%s -> %s" % (k, v) for k, v in {'foo': 'bar', 'kopytko': 'no elo'}.iteritems()]


    

    
Out[30]:





['kopytko -> no elo', 'foo -> bar']

In [31]:

    

{i: i**2 for i in xrange(10)}


    

    
Out[31]:





{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64, 9: 81}

In [34]:

    

def foo():
    return 'bar'


    

In [35]:

    

print foo()


    

    




bar

In [41]:

    

def foo(label):
    return label.capitalize()


    

In [42]:

    

foo('foo')


    

    
Out[42]:





'Foo'

In [52]:

    

def foo(*args, **kwargs):
    result = {element: element.capitalize() for element in args}
    result.update(kwargs)
    return result


    

In [53]:

    

foo('tak', 'nie', 'nie wiem', przypadek='nie sadze')


    

    
Out[53]:





{'nie': 'Nie', 'nie wiem': 'Nie wiem', 'przypadek': 'nie sadze', 'tak': 'Tak'}

In [57]:

    

def powers(limit):
    for i in xrange(limit):
        yield i**2


    

In [58]:

    

my_powers = powers(3)


    

In [59]:

    

next(my_powers)


    

    
Out[59]:





0

In [60]:

    

next(my_powers)


    

    
Out[60]:





1

In [61]:

    

next(my_powers)


    

    
Out[61]:





4

In [62]:

    

next(my_powers)


    

    




---------------------------------------------------------------------------
StopIteration                             Traceback (most recent call last)
<ipython-input-62-3e3c7e456c4e> in <module>()
----> 1 next(my_powers)

StopIteration: 

In [63]:

    

for i in powers(3):
    print i


    

    




0
1
4

In [64]:

    

list(powers(3))


    

    
Out[64]:





[0, 1, 4]