Python some important built-in functions

Function	Describe
Abs (number)	Returns the absolute value of a number
Apply (Function[,args[,kwds]])	Invokes the given function, optionally providing a parameter
All (iterable)	Returns trueif all iterable elements are true , otherwise False
Any (iterable)	Returns trueif any of the iterable elements are true , otherwise False
Basestring ()	Str and Unicode abstract superclass for type checking
BOOL (object)	Returns True or False, depending on The boolean value of Object
Callable (object)	Checks whether an object can be called
Chr (number)	Returns the ASCII code for a given number of characters
Classmethod (func)	Method of creating a class from an instance method
CMP (x, y)	Compare x and y- Returns a negative number if x<y ; Returns a positive number if x>y, or 0 if x=y
Complex (Real[,imag])	Returns the complex number of a given real part (as well as an optional imaginary part)
Dalattr (object, name)	Removes the given property from the given object
Dict ([mapping-or-sequence])	Constructs a dictionary that can optionally be constructed from a map or a list of (key, value) pairs. You can also use the keyword parameter to call
Dir ([Object])	A list of (most) names that are currently visible to the domain, or selectively list (most) attributes of a given object
Divmod (A, B)	Return (a//b, a%b) (float type has special rules)
Enumerate (iterable)	For All item iterations (index, project) in iterable
Eval (string[, Globals[,locals])	Evaluates a string that contains an expression, optionally in a given global scope or local scope
ExecFile (file[, globals[, locals])	Executes a Python file, optionally in a given global scope or local scope
File (filename[,mode[, bufsize])	Creates a file of the given file name, optionally using the given pattern and buffer size
Filter (function, sequence)	Returns a list of elements returned from a function in a given sequence
Float (object)	Convert a string or numeric value to a float type
Frozenset ([iterable])	Creates an immutable collection, which means that it cannot be added to another collection
GetAttr (Object,name[,default])	Returns the value of the attribute specified in the given object, optionally given a default value
Globals ()	Returns the dictionary representing the current scope
Hasattr (object, name)	Checks whether the given object has a specified property
Help ([Object])	Call the built-in Help system, or print help for a given object
Hex (number)	Converts a number to a string in hexadecimal notation
ID (object)	Returns the unique ID of the given object
Input ([prompt])	Equivalent to eval (raw_input (prompt))
Int (object[, radix]	Converts a string or a number (available cardinality) to an integer
Isinstance (object, ClassInfo)	Checks whether the given object is an instance of the given classinfo value,classinfo can be a class object, Tuple of type Object or Class object and type Object
Issubclass (Class1, Class2)	Check if Class1 is a subclass of Class2 (each class is its own subclass)
ITER (object[, Sentine])	Returns an Iterator object, which can be a object_iter () iterator for the iteration sequence (if object supports the _getitem_ method) , or provide a Sentinel, the iterator invokes Object in each iteration until it returns to Sentinel
Len (object)	Returns the length of the given object (number of items)
List ([sequence])	Constructs a list, optionally using the same items as the provided sequence sequence
Locals ()	Returns the dictionary that represents the current local scope (do not modify the dictionary)
Long (object[, Radix])	Converts a string (optionally using a given cardinality radix) or a number to a long integer
Map (function, sequence,...)	Creates a list of values that are returned by the given function functions applied to the provided list sequence each item
Max (Object1, [Object2,...])	If the object1 is a non-empty sequence, the largest element is returned. Otherwise, the supplied parameters (Object1, object2 ...) are returned. the maximum value
Min (Object1, [Object2, ...])	If the object1 is a non-empty sequence, the smallest element is returned. Otherwise, the supplied parameters (Object1, object2 ...) are returned. the minimum value
Object ()	Returns an instance of the base object for all new real classes
Oct (number)	Converts an integer to a string in octal notation
Open (Filename[,mode[,bufsize]])	File alias (use open instead of file when opening files )
Ord (char)	Returns the ascill value of the order character (a character with a length of 1 or a Unicode string)
Pow (x, y[,z])	Returns the y -side of X , optionally modulo z
Property (fget[, fset,[fdel[, Doc]])	returns a range of values (in list form) with the given starting value (including the starting value, default 0) and the end value (not included) and the step (default = 1)
Range ([Start,] stop[step])	Creating properties from a set of accessors
Raw_input ([prompt])	Returns the data entered by the user as a string, optionally using the given prompt prompt
Reduce (function, sequence[, initializer])	Applies the given function to all of the sequences, using the accumulated results as the first parameter, all the items as the second parameter, and optionally the given starting value (initializer)
Reload (module)	Reload into an already loaded module and return it
Repr (object)	Returns a String representing an object, typically used as an eval parameter
Reversed (Sequence)	Returns a reverse iterator to a sequence
Round (float[, N])	Rounds a given floating point, leaving N bits after the decimal point (default = 0)
Set ([iterable])	Returns the collection of elements generated from iterable ( if given )
SetAttr (object, name, value)	Sets the value of the specified property of the given object to the given value
Sorted (iterable[, Cmp][,key][,reverse])	Returns a new sorted list from the Iterable project. Optional parameters and List methods the same parameters in sort
Staticmethod (func)	To create a static (Class) method from an instance method
Str (object)	Returns a well-formatted string representing the object of the given objects
Sum (seq[, start])	Returns a series of numbers added to the optional parameter Start(default = 0) and
Super (type[, Obj/type])	Returns a superclass of the given type (optional as an actual class)
Tuple ([sequence])	Constructs a tuple, optionally using the same items as the supplied sequence sequence
Type (object)	Returns the type of the given object
Type (name, bases, Dict)	Returns a new type object using the given name, base class, and scope
UNICHR (number)	the Unicode version of CHR
Unicode (object[, encoding[, errors])	Returns the Unicode encoded version of the given object , given the encoding and the mode of handling the error (' strict ', ' replace ' or ' ignore ', ' strict ' is the default mode)
VAR ([object])	Returns a dictionary that represents local work, or a dictionary of the attributes of a given object (do not modify the returned dictionary because the modified result is not defined by a language reference)
Xrange ([start,]stop[, Step])	Similar to range, But the returned object uses less memory and is used only for iterations
Zip (Sequence1,...)	Returns a list of tuples, each of which includes an item of a given sequence. The length of the returned list is the same as the shortest length of the supplied sequence

Python some important built-in functions