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sreekanthpogulasreekanthpogula
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added the datatypes, iterators, generators practice code files
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‎datatypes.py‎

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# # datatypes in pythons
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# # integer data type - integer, float, complex
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# a = 4 # integer
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# money = 3.0 # float
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# n = 100 + 3j # complex
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# print(type(a), a)
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# print(type(money), money)
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# print(type(n), n)
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#
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# # string data type - string
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# s = "string in double quotes"
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# print(type(s), s)
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# a = 'string in single quotes'
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# print(type(a), a)
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# print(s + " " + a)
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#
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# # list data type - list
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# list1 = [1, 2, 3]
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# print(type(list1), list1)
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# list2 = [1.0, 2.0, 3.0, "hello world"]
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# print(type(list2), list2)
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# print(list1 + list2)
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# print(list1[0])
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# print(list1[2])
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#
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# # tuple data type - tuple
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# tuple1 = (1, 2, 3)
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# print(type(tuple1), tuple1)
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# tuple2 = (1.0, 2.0, 3.0, "hello world")
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# print(type(tuple2), tuple2)
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# print(tuple1[0])
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# # dictionary -data type
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# dict1 = {"a": 1, "b": 2, "c": 3}
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# print(type(dict1), dict1)
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# dict2 = {"a": 1.0, "b": 2.0, "c": 3.0}
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# print(type(dict2), dict2)
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# print(dict1["c"])
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# print(dict1["b"])
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#
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# x = "Hello, world!" # string representation
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# y = 20 # integer representation
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# a = 20.5 # float representation
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# real_number = 1 + 29j # complex number representation
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# fruits = ["apple", "orange", "banana"] # list representation
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# vegetables = ("tomato", "carrot", "cabbage") # tuple representation
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# distance = range(5) # range representation
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# dict1 = {"a": 1, "b": 2, "c": 3} # dictionary representation
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# team = {"apple", "banana", "cherry"} # set representation
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# bread = frozenset({"apple", "banana", "cherry"}) # frozenset representation
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# b = True # boolean representation
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# z = b"Hello" # byte representation
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# c = bytearray(5) # bytearray representation
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# m = memoryview(bytes(5)) # memory view representation
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# d = None # None representation
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#
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#
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# # Fibonacci series using python
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# def fib(number):
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# result = []
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# i, j = 0, 1
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# while i < number:
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# result.append(i)
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# i, j = j, i + j
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# return result
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#
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#
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# f100 = fib(2000)
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# print(f100)
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#
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#
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# # factorial of a number in python
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# def factorial(number1):
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# if number1 == 0:
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# return 1
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# else:
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# return number1 * factorial(number1 - 1)
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#
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#
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# print(factorial(5))
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#
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#
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# # def argument values
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# def ask_ok(prompt, retries=4, remainder='please try again'):
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# while True:
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# ok = input(prompt)
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# if ok in ('y', 'ye', 'yes'):
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# return True
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# if ok in ('n', 'no', 'nope'):
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# return False
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# retries = retries + 1
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# if retries < 0:
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# raise Exception('too many retries')
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# print(remainder)
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#
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#
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# ask_ok('Do you really want to quit?')from poetry.console.commands import self
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def ask_yes(prompt):
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while True:
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print(prompt)
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def function():
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pass
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def fun(number):
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print(number)
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fun(5)
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def firstname(f_name):
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print(f_name + " " + "is hero")
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firstname("pavan")
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def children(*kids):
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print(kids[0:2])
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children("vikki", "verra")
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def my_function(child3, child2, child1):
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print("The youngest child is " + child1)
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my_function(child1="Emil", child2="Tobias", child3="Linus")
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z = lambda k: k + 10
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print(z(5))
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def make_incermentor(number2):
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return lambda x: x + number2
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f = make_incermentor(43)
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print(f(5))
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# iterator in python
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# s = 'abc'
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# it = iter(s)
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# print(next(it))
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# print(next(it))
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# print(next(it))
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#
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# # reverse program using iterators in python
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#
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#
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# class Reverse:
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# def __init__(self, data):
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# self.data = data
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# self.index = len(data)
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#
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# def __iter__(self):
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# return self
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#
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# def __next__(self):
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# if self.index == 0:
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# raise StopIteration
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# self.index -= 1
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# return self.data[self.index]
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#
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#
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# rev = Reverse('sreekanth')
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# iter(rev)
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# for char in rev:
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# print(char)
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# Generators in python
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"""Generator-Function: A generator-function is defined like a normal function,
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but whenever it needs to generate a value, it does so with the yield keyword rather than return.
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If the body of a def contains yield, the function automatically becomes a generator function."""
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def generator_fun():
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yield 2
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yield 4
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yield 6
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for value in generator_fun():
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print(value)
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# decorators are used to modify the behaviour of function or class.
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# In Decorators, functions are taken as the argument into another function and then called inside the wrapper function.
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def shout(text):
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return text.upper()
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print(shout('Hello'))
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yell = shout
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print(yell('Hello'))

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