Python built in functions

Python built in functions

• 1.
  PYTHON BUILT INFUNCTIONS Abs()-Returns the absolute value of a number For Example, x = abs(-7.25) All()-Returns True if all items in an iterable object are true For Example, mylist = [True, True, True] x = all(mylist) Bin()-Returns the binary version of a number For Example, x = bin(36) Bool()-Returns the boolean value of the specified object For Example, x = bool(1)
• 2.
  Compile()-Returns the specifiedsource as an object, ready to be executed For Example, mytext = 'print(55)' x = compile('mytext', 'test', 'eval') exec(x) Complex()-Returns a complex number For Example, x = complex(3, 5) Dict()-Returns a dictionary For Example, x = dict(name = "John", age = 36, country = "Norway")
• 3.
  Dir()- Returns alist of the specified object's properties and methods For Example, class Person: name = "John" age = 36 country = "Norway" print(dir(Person)) Eval()-Evaluates and executes an expression For Example, x = 'print(55)‘ eval(x)
• 4.
  Exec()-Executes the specifiedcode (or object) For Example, x = 'name ="John"nprint(name)' exec(x) Filter()-Use a filter function to exclude items in a iterable object For Example, ages = [5, 12, 17, 18, 24, 32] def myFunc(x): if x < 18: return False else: return True
• 5.
  adults = filter(myFunc,ages) for x in adults: print(x) Float()- Returns a floating point number For Example, x = float(3) Format()-Formats a specified value For Example, x = format(0.5, '%') Forzenset()-Returns a frozenset object For Example, mylist = ['apple', 'banana', 'cherry'] x = frozenset(mylist)
• 6.
  Getattr()-Returns the valueof the specified attribute (property or method) For Example, class Person: name = "John" age = 36 country = "Norway" x = getattr(Person, 'age') Globals-Returns the current global symbol table as a dictionary For Example, x = globals() print(x)
• 7.
  Hash()-Returns the hashvalue of a specified object Hex()-Converts a number into a hexadecimal value For Example, x = hex(255) Id()-Returns the id of an object For Example, x = ('apple', 'banana', 'cherry') y = id(x) Input()-Allowing user input For Example, print('Enter your name:') x = input() print('Hello, ' + x)
• 8.
  Len() – Returnsthe length of an object For Example, mylist = ["apple", "banana", "cherry"] x = len(mylist) List()-Returns a list For Example, x = list(('apple', 'banana', 'cherry')) Locals()- Returns an updated dictionary of the current local symbol table For Example, x = locals() print(x)
• 9.
  Map()-Returns the specifiediterator with the specified function applied to each item For Example, def myfunc(n): return len(n) x = map(myfunc, ('apple', 'banana', 'cherry')) Max()-Returns the largest item in an iterable For Example, x = max(5, 10) Min()-Returns the smallest item in an iterable For Example, a = (1, 5, 3, 9) x = min(a)
• 10.
  Ord()-Convert an integerrepresenting the Unicode of the specified character For Example, x = ord("h") Pow()-Returns the value of x to the power of y For Example, x = pow(4, 3) Print()-Prints to the standard output device For Example, print("Hello World") Range()-Returns a sequence of numbers, starting from 0 and increments by 1 (by default) For Example, x = range(6) for n in x: print(n)
• 11.
  Set()-Returns a newset object For Example, x = set(('apple', 'banana', 'cherry')) Sort()-Returns a sorted list For Example, a = ("a", "b", "c", "d", "e", "f", "g", "h") x = slice(2) print(a[x]) Tuple()-Returns a tuple For Example, x = tuple(('apple', 'banana', 'cherry'))
• 12.
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