s = 'hello world'

print(len(s))

11

print(s.upper())

HELLO WORLD

print(s.lower())

hello world

print(s.capitalize())

Hello world

print(s.title())

Hello World

print(s.swapcase())

HELLO WORLD

print(s.startswith('hello'))

True

print(s.endswith('world'))

True

print(s.find('o'))

4

print(s.rfind('o'))

7

print(s.index('e'))

1

print(s.replace('world', 'python'))

hello python

print(s.split())

['hello', 'world']

print('-'.join(['a', 'b', 'c']))

a-b-c

print(s.strip())

hello world

print('  test  '.lstrip())

test

print('  test  '.rstrip())

  test

print(s.count('l'))

3

print('abc123'.isalnum())

True

print('abc'.isalpha())

True

print('123'.isdigit())

True

print('abc'.islower())

True

print('ABC'.isupper())

True

print('Hello'.istitle())

True

print('   '.isspace())

True

print('abc'.center(10, '-'))

---abc----

print('abc'.ljust(10, '*'))

abc*******

print('abc'.rjust(10, '*'))

*******abc

print('42'.zfill(5))

00042

print('a    b   c'.expandtabs(4))

a   b   c

print(f'Length of s is {len(s)}')

Length of s is 11

s2 = 'こんにちは'
print(s2.encode('utf-8'))

b'\xe3\x81\x93\xe3\x82\x93\xe3\x81\xab\xe3\x81\xa1\xe3\x81\xaf'

print(list('hello'))

['h', 'e', 'l', 'l', 'o']

print(s[1:5])

ello

print(s[:5])

hello

print(s[6:])

world

print(s[::-1])

dlrow olleh

print('hello' * 3)

hellohellohello

print('lo' in s)

True

print('xyz' not in s)

True

print(any(char.isdigit() for char in s))

False

print(all(char.isalpha() for char in 'abc'))

True

print('python3'.partition('3'))

('python', '3', '')

print('foo
bar
baz'.splitlines())

  Cell In[78], line 1
    print('foo
          ^
SyntaxError: unterminated string literal (detected at line 1)

print('1,2,3'.split(','))

['1', '2', '3']

print('...hello...'.strip('.'))

hello

print('TestCase'.casefold())

testcase

print('ß'.lower())

ß

print('ß'.casefold())

ss

print(chr(97))

a

print(ord('a'))

97

print('hello'.__contains__('ell'))

True

print('python'.__getitem__(3))

h

print('hello'.__len__())

5

print('  abc  '.strip(' '))

abc

print('abcABC123'.isprintable())

True

print('abc
def'.isprintable())

  Cell In[91], line 1
    print('abc
          ^
SyntaxError: unterminated string literal (detected at line 1)

print('ABC'.rpartition('B'))

('A', 'B', 'C')

print('hello'.rindex('l'))

3

print('hello'.isidentifier())

True

print('_var'.isidentifier())

True

print('snake_case'.replace('_', ' ').title().replace(' ', ''))

SnakeCase

print('abc'.encode())

b'abc'

print(b'abc'.decode())

abc

print('abcDEF'.translate(str.maketrans('abc', '123')))

123DEF

print('12345'.isdigit())

True

print('Ⅻ'.isnumeric())

True

print('one1two2'.translate(str.maketrans('', '', '0123456789')))

onetwo

print('  Hello  '.strip().lower())

hello

print('12'.rjust(5, '0'))

00012

print('abc'.rjust(10))

       abc

print('xyxyxy'.replace('xy', 'z', 2))

zzxy

print('hello'.count('l', 1, 4))

2

print('abcdefghijklmno'.find('k', 5))

10

print('a-b-c'.rsplit('-', 1))

['a-b', 'c']

print('a,b,c'.split(',', 2))

['a', 'b', 'c']

print('abc'.rjust(6, '.'))

...abc

print(','.join(map(str, range(5))))

0,1,2,3,4

print('abc'.__add__('123'))

abc123

print('abc' < 'abd')

True

print('Abc' < 'abc')

True

print('hello'.endswith(('o', 'd')))

True

print('hello'.startswith(('he', 'le')))

True