[0] Numbers, strings and booleans

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1


    

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3784327523490875234592803475234852348795234978572345982347543298057


    

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print(type(1)); type(1)


    

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1.0


    

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.01


    

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1.5E10


    

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print(type(1.5E10)); type(1.5E10)


    

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print(1.5 + 0.5j.real, "+", 1.5 + 0.5j.imag,'j')


    

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1+2


    

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1.0+2


    

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1.+2


    

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2*2


    

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1.*2


    

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1/2 # Floating point division


    

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2/2


    

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2//2 # Integer division


    

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3//2


    

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int(1.)


    

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float(1)


    

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a = 2**1000
print(a)


    

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3 % 2


    

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1 << 2 # Left shift


    

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4 >> 2 # Right shift


    

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a = 0b11100111 &\
    0b10111101 # Bit-wise AND
print(a); print(bin(a))


    

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a = 0xFA00 | 0x000A # Bit-wise OR
print(hex(a))
print(oct(a))
print(bin(a))
print(type(a))


    

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print(bin(1)); 0b1 ^ 0b1 # Bit-wise XOR


    

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~1 # 2's complement invert


    

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bin(-1)


    

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bin(-2)


    

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1 < 2 # Less than


    

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1 > 2 # Greater than


    

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1 <= 1 # Less than or equal to


    

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1 >= 1 # Greater than or equal to


    

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1 == 1 # Equal to


    

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1 != 1 # Not equal to


    

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# Python has a very good arithmetic accuracy!
print(1/(10*1000) != 1/(10*1000))
print(1/(10*1000) != 1/(10*1000 + 1))


    

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"hello"


    

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"""hello"""


    

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'hello'


    

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"I'm a string with a single quote inside"


    

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'I\'m a string with a single quote inside' # \ == Escape character


    

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'''... I'm a string with both types of "quotation marks" inside!'''


    

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a = '''I'm "a"'''

print(a)


    

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a


    

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len(a)


    

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a = "hola " \
"caracola"
print(a)


    

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print(r"I'm a raw string \n.")
print("I'm not \n.")


    

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print(u"I'm a Unicode string: \u5982\u679c\u6211\u662f")


    

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print('''I'm a multy line
string''')


    

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ord('a')


    

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ord('á')


    

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ord('果')


    

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chr(26524)


    

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min('AaBb')


    

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max('AaBb')


    

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'hello'.index('e')


    

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'hello'.index('ll')


    

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'hello'.find('ll')


    

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'hello'.count('l')


    

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list('hello')


    

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set('hello')


    

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tuple('hello')


    

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type('hello')


    

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type(b'hello')


    

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'hello'.capitalize()


    

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'Hello'.lower()


    

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'Hello'.swapcase()


    

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'Hello'.upper()


    

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'the entropy of the Spanish language'.title()


    

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'hello'.islower()


    

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'Hello'.islower()


    

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'Hello'.isupper()


    

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'HELLO'.isupper()


    

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'Iron Maiden'.isspace()


    

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' '.isspace()


    

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' \n'.isspace()


    

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'hello'.center(10)


    

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'hello'.center(10, '.')


    

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'hello'.endswith('l')


    

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' hello '.strip()


    

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' hello'.lstrip()


    

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' hello '.rstrip()


    

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'www.hello.com'.lstrip('w')


    

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'www.hello.com'.lstrip('h')


    

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print('I have a newline character\ninside')


    

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print('I have a backslash character "\\" inside')


    

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print ('I', 'love', 'pizza')


    

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print('hola')
print('caracola')


    

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print('hola', end=' ')
print('caracola')


    

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print('hola', end='\n')
print('caracola')


    

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print('a', 'b', sep='+')


    

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"hello" == 'hello'


    

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"""hello""" == 'hello'


    

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'hello' < 'Hello'


    

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'f' in 'file'


    

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'123'.isalnum()


    

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'a34v'.isalnum()


    

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'123'.isalpha()


    

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'a34v'.isalpha()


    

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'aba'.isalpha()


    

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'1e10'.isalnum()


    

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'1e10'.isdigit()


    

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'124'.isdigit()


    

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'hello'.startswith('he')


    

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'hello'.endswith('lo')


    

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'hola' + 'caracola'


    

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'hola' + 1


    

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'hello' + str(1)


    

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'hola ' + 'caracola'


    

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'hello {}'.format(1)


    

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'{} {} {}'.format(1, "dos", 3)


    

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'{0} {1} {2}'.format(1, "dos", 3)


    

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'{2} {1} {0}'.format(1, "dos", 3)


    

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import math
print(math.pi)
print('{:.4f}'.format(math.pi))
print('{:.50f}'.format(math.pi))


    

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print('{:*^21}'.format('hello'))


    

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print('{subject} {predicate}'.format(subject='I', predicate='love pizza'))


    

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a = 4
b = 5
result = a + b
print(f"{a} + {b} = {result}")


    

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print(":".join(['h', 'e', 'l', 'l', 'o']))


    

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print('h:e:l:l:o'.split(':'))


    

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print('hola caracola'.split(' '))


    

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type('hola caracola'.split(' '))


    

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print('hello'[::-1]) # [begin:end:step]


    

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print('hello'[1:2]) # Get a slice!


    

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print('hello'[:4])


    

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print('hello'[4:])


    

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'hello'.replace('l', 'y')


    

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'hello'.replace('l', 'y', 1)


    

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s = 'jelly'
id(s)


    

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s = 'bean'
id(s)


    

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True == True # Boolean equal to


    

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True != True # Boolean not equal to


    

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not True # Boolean NOT


    

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True and False # Boolean AND


    

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True or False # Boolean OR


    

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a = 2
a *= 5
print(a)
a += 3
print(a)


    

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a = 1
a = a + 2


    

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a = 1
a <<= 1
print(a)


    

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a = 'hello'
a += 'world'
print(a)


    

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a = 1
b = 2
a, b = b, a
print(a, b)


    

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dir()


    

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dir(a)