مثال 70: بررسی String Object

my_str = 'hello World!'

type(my_str)
# str

print(my_str.__doc__)

str(object='') -> str
str(bytes_or_buffer[, encoding[, errors]]) -> str

Create a new string object from the given object. If encoding or
errors is specified, then the object must expose a data buffer
that will be decoded using the given encoding and error handler.
Otherwise, returns the result of object.__str__() (if defined)
or repr(object).
encoding defaults to 'utf-8'.
errors defaults to 'strict'.

my_str.__dir__()

['__new__',
 '__repr__',
 '__hash__',
 '__str__',
 '__lt__',
 '__le__',
 '__eq__',
 '__ne__',
 '__gt__',
 '__ge__',
 '__iter__',
 '__mod__',
 '__rmod__',
 '__len__',
 '__getitem__',
 '__add__',
 '__mul__',
 '__rmul__',
 '__contains__',
 'encode',
 'replace',
 'split',
 'rsplit',
 'join',
 'capitalize',
 'casefold',
 'title',
 'center',
 'count',
 'expandtabs',
 'find',
 'partition',
 'index',
 'ljust',
 'lower',
 'lstrip',
 'rfind',
 'rindex',
 'rjust',
 'rstrip',
 'rpartition',
 'splitlines',
 'strip',
 'swapcase',
 'translate',
 'upper',
 'startswith',
 'endswith',
 'removeprefix',
 'removesuffix',
 'isascii',
 'islower',
 'isupper',
 'istitle',
 'isspace',
 'isdecimal',
 'isdigit',
 'isnumeric',
 'isalpha',
 'isalnum',
 'isidentifier',
 'isprintable',
 'zfill',
 'format',
 'format_map',
 '__format__',
 'maketrans',
 '__sizeof__',
 '__getnewargs__',
 '__doc__',
 '__getattribute__',
 '__setattr__',
 '__delattr__',
 '__init__',
 '__reduce_ex__',
 '__reduce__',
 '__getstate__',
 '__subclasshook__',
 '__init_subclass__',
 '__dir__',
 '__class__']

my_str.capitalize() # 'Hello world!'

my_str.upper() # 'HELLO WORLD!'

my_str.replace(' ', '') # 'helloworld!'