In [1]:
import math

In [13]:
def myfun(x, y):
    a = math.cos(3 * (x - 1)) + \
             math.sin(3 * (y - 1))
    return a

In [10]:
x, y  = 2.0, 5.0

In [11]:
print(myfun(x,y))


-1.5265654146008805

In [14]:
_


Out[14]:
''

In [15]:
5+6


Out[15]:
11

In [16]:
_


Out[16]:
11

In [17]:
_


Out[17]:
11

In [19]:
import sys

In [20]:
sys.maxsize


Out[20]:
9223372036854775807

In [21]:
dir(sys)


Out[21]:
['__displayhook__',
 '__doc__',
 '__excepthook__',
 '__interactivehook__',
 '__loader__',
 '__name__',
 '__package__',
 '__spec__',
 '__stderr__',
 '__stdin__',
 '__stdout__',
 '_clear_type_cache',
 '_current_frames',
 '_debugmallocstats',
 '_getframe',
 '_home',
 '_mercurial',
 '_xoptions',
 'abiflags',
 'api_version',
 'argv',
 'base_exec_prefix',
 'base_prefix',
 'builtin_module_names',
 'byteorder',
 'call_tracing',
 'callstats',
 'copyright',
 'displayhook',
 'dont_write_bytecode',
 'exc_info',
 'excepthook',
 'exec_prefix',
 'executable',
 'exit',
 'flags',
 'float_info',
 'float_repr_style',
 'get_coroutine_wrapper',
 'getallocatedblocks',
 'getcheckinterval',
 'getdefaultencoding',
 'getdlopenflags',
 'getfilesystemencoding',
 'getprofile',
 'getrecursionlimit',
 'getrefcount',
 'getsizeof',
 'getswitchinterval',
 'gettrace',
 'hash_info',
 'hexversion',
 'implementation',
 'int_info',
 'intern',
 'is_finalizing',
 'last_traceback',
 'last_type',
 'last_value',
 'maxsize',
 'maxunicode',
 'meta_path',
 'modules',
 'path',
 'path_hooks',
 'path_importer_cache',
 'platform',
 'prefix',
 'ps1',
 'ps2',
 'ps3',
 'set_coroutine_wrapper',
 'setcheckinterval',
 'setdlopenflags',
 'setprofile',
 'setrecursionlimit',
 'setswitchinterval',
 'settrace',
 'stderr',
 'stdin',
 'stdout',
 'thread_info',
 'version',
 'version_info',
 'warnoptions']

In [22]:
help(sys.maxsize)


Help on int object:

class int(object)
 |  int(x=0) -> integer
 |  int(x, base=10) -> integer
 |  
 |  Convert a number or string to an integer, or return 0 if no arguments
 |  are given.  If x is a number, return x.__int__().  For floating point
 |  numbers, this truncates towards zero.
 |  
 |  If x is not a number or if base is given, then x must be a string,
 |  bytes, or bytearray instance representing an integer literal in the
 |  given base.  The literal can be preceded by '+' or '-' and be surrounded
 |  by whitespace.  The base defaults to 10.  Valid bases are 0 and 2-36.
 |  Base 0 means to interpret the base from the string as an integer literal.
 |  >>> int('0b100', base=0)
 |  4
 |  
 |  Methods defined here:
 |  
 |  __abs__(self, /)
 |      abs(self)
 |  
 |  __add__(self, value, /)
 |      Return self+value.
 |  
 |  __and__(self, value, /)
 |      Return self&value.
 |  
 |  __bool__(self, /)
 |      self != 0
 |  
 |  __ceil__(...)
 |      Ceiling of an Integral returns itself.
 |  
 |  __divmod__(self, value, /)
 |      Return divmod(self, value).
 |  
 |  __eq__(self, value, /)
 |      Return self==value.
 |  
 |  __float__(self, /)
 |      float(self)
 |  
 |  __floor__(...)
 |      Flooring an Integral returns itself.
 |  
 |  __floordiv__(self, value, /)
 |      Return self//value.
 |  
 |  __format__(...)
 |      default object formatter
 |  
 |  __ge__(self, value, /)
 |      Return self>=value.
 |  
 |  __getattribute__(self, name, /)
 |      Return getattr(self, name).
 |  
 |  __getnewargs__(...)
 |  
 |  __gt__(self, value, /)
 |      Return self>value.
 |  
 |  __hash__(self, /)
 |      Return hash(self).
 |  
 |  __index__(self, /)
 |      Return self converted to an integer, if self is suitable for use as an index into a list.
 |  
 |  __int__(self, /)
 |      int(self)
 |  
 |  __invert__(self, /)
 |      ~self
 |  
 |  __le__(self, value, /)
 |      Return self<=value.
 |  
 |  __lshift__(self, value, /)
 |      Return self<<value.
 |  
 |  __lt__(self, value, /)
 |      Return self<value.
 |  
 |  __mod__(self, value, /)
 |      Return self%value.
 |  
 |  __mul__(self, value, /)
 |      Return self*value.
 |  
 |  __ne__(self, value, /)
 |      Return self!=value.
 |  
 |  __neg__(self, /)
 |      -self
 |  
 |  __new__(*args, **kwargs) from builtins.type
 |      Create and return a new object.  See help(type) for accurate signature.
 |  
 |  __or__(self, value, /)
 |      Return self|value.
 |  
 |  __pos__(self, /)
 |      +self
 |  
 |  __pow__(self, value, mod=None, /)
 |      Return pow(self, value, mod).
 |  
 |  __radd__(self, value, /)
 |      Return value+self.
 |  
 |  __rand__(self, value, /)
 |      Return value&self.
 |  
 |  __rdivmod__(self, value, /)
 |      Return divmod(value, self).
 |  
 |  __repr__(self, /)
 |      Return repr(self).
 |  
 |  __rfloordiv__(self, value, /)
 |      Return value//self.
 |  
 |  __rlshift__(self, value, /)
 |      Return value<<self.
 |  
 |  __rmod__(self, value, /)
 |      Return value%self.
 |  
 |  __rmul__(self, value, /)
 |      Return value*self.
 |  
 |  __ror__(self, value, /)
 |      Return value|self.
 |  
 |  __round__(...)
 |      Rounding an Integral returns itself.
 |      Rounding with an ndigits argument also returns an integer.
 |  
 |  __rpow__(self, value, mod=None, /)
 |      Return pow(value, self, mod).
 |  
 |  __rrshift__(self, value, /)
 |      Return value>>self.
 |  
 |  __rshift__(self, value, /)
 |      Return self>>value.
 |  
 |  __rsub__(self, value, /)
 |      Return value-self.
 |  
 |  __rtruediv__(self, value, /)
 |      Return value/self.
 |  
 |  __rxor__(self, value, /)
 |      Return value^self.
 |  
 |  __sizeof__(...)
 |      Returns size in memory, in bytes
 |  
 |  __str__(self, /)
 |      Return str(self).
 |  
 |  __sub__(self, value, /)
 |      Return self-value.
 |  
 |  __truediv__(self, value, /)
 |      Return self/value.
 |  
 |  __trunc__(...)
 |      Truncating an Integral returns itself.
 |  
 |  __xor__(self, value, /)
 |      Return self^value.
 |  
 |  bit_length(...)
 |      int.bit_length() -> int
 |      
 |      Number of bits necessary to represent self in binary.
 |      >>> bin(37)
 |      '0b100101'
 |      >>> (37).bit_length()
 |      6
 |  
 |  conjugate(...)
 |      Returns self, the complex conjugate of any int.
 |  
 |  from_bytes(...) from builtins.type
 |      int.from_bytes(bytes, byteorder, *, signed=False) -> int
 |      
 |      Return the integer represented by the given array of bytes.
 |      
 |      The bytes argument must be a bytes-like object (e.g. bytes or bytearray).
 |      
 |      The byteorder argument determines the byte order used to represent the
 |      integer.  If byteorder is 'big', the most significant byte is at the
 |      beginning of the byte array.  If byteorder is 'little', the most
 |      significant byte is at the end of the byte array.  To request the native
 |      byte order of the host system, use `sys.byteorder' as the byte order value.
 |      
 |      The signed keyword-only argument indicates whether two's complement is
 |      used to represent the integer.
 |  
 |  to_bytes(...)
 |      int.to_bytes(length, byteorder, *, signed=False) -> bytes
 |      
 |      Return an array of bytes representing an integer.
 |      
 |      The integer is represented using length bytes.  An OverflowError is
 |      raised if the integer is not representable with the given number of
 |      bytes.
 |      
 |      The byteorder argument determines the byte order used to represent the
 |      integer.  If byteorder is 'big', the most significant byte is at the
 |      beginning of the byte array.  If byteorder is 'little', the most
 |      significant byte is at the end of the byte array.  To request the native
 |      byte order of the host system, use `sys.byteorder' as the byte order value.
 |      
 |      The signed keyword-only argument determines whether two's complement is
 |      used to represent the integer.  If signed is False and a negative integer
 |      is given, an OverflowError is raised.
 |  
 |  ----------------------------------------------------------------------
 |  Data descriptors defined here:
 |  
 |  denominator
 |      the denominator of a rational number in lowest terms
 |  
 |  imag
 |      the imaginary part of a complex number
 |  
 |  numerator
 |      the numerator of a rational number in lowest terms
 |  
 |  real
 |      the real part of a complex number


In [1]:
%reset


Once deleted, variables cannot be recovered. Proceed (y/[n])? y

In [2]:
%reset -f

In [3]:
6+7


Out[3]:
13

In [4]:
a = b'abcd'
b = bytes([97,98,99,100])
c = 'abcd'.encode()

In [5]:
print(a)


b'abcd'

In [6]:
print(b)


b'abcd'

In [7]:
print(c)


b'abcd'

In [8]:
d = bytearray('abcd', 'utf-8')
e = bytearray(b'abcd')
f = bytearray([97,98,99,100])

In [9]:
print(d)


bytearray(b'abcd')

In [10]:
print(e)


bytearray(b'abcd')

In [11]:
print(f)


bytearray(b'abcd')

In [12]:
fs = frozenset(['d',7])

In [13]:
fs


Out[13]:
frozenset({'d', 7})

In [14]:
print(fs)


frozenset({'d', 7})

In [26]:
a = r'fff\nbbb'

In [27]:
print(a)


fff\nbbb

In [28]:
a = 'fff\nbbb'

In [29]:
print(a)


fff
bbb

In [ ]: