Sentence capitalizer in python

Example:

def f1 (string1: str):
    sentences = string1.split(". ")
    sentences2 = [sentence[0].capitalize() + sentence[1:] for sentence in sentences]
    string2 = '. '.join(sentences2)
    return string2
print (f1("hello. my name is Joe. what is your name?"))

Output:

Hello. My name is Joe. What is your name?

Example:

import re
def sentence_case(text):    
     
    sentences = re.findall('[^.!?]+[.!?](?:\s|\Z)', text)

    sentences = [x[0].upper() + x[1:] for x in sentences]
   
    return ''.join(sentences)

print(sentence_case("hEllo. my name is Joe. what is your name?"))

Output:

HEllo. My name is Joe. What is your name?

finding maximum and minimum numbers by using lambda function

Finding maximum number:

my_max=lambda a,b,c:a if a>b and a>c else(b if b>c else c)

print(my_max(4,7,6))

Output:

7

Finding minimum number:

my_min=lambda a,b,c:a if a<b and a<c else(b if b<c else c)

print(my_min(4,7,6))



Output:

4

Fibonacci series

write Fibonacci series up to n

def fib(n):
    a, b = 0, 1
    while b < n:
        print(b,)
        a, b = b, a+b
fib(100)

Output:

1

1

2

3

5

8

13

21

34

55

89

swapping of two numbers in python

swapping of two numbers by using temporary variable

a=int(input("enter a value: "))

b=int(input("enter b value: "))

print("before swapping: ","a=",a,"b=",b)

temp=a

a=b

b=temp

print("after swapping: ","a=",a,"b=",b)

Output:

enter a value: 4

enter b value: 5

before swapping:  a= 4 b= 5


after swapping:  a= 5 b= 4



swapping of two numbers 

a=int(input("enter a value: "))

b=int(input("enter b value: "))

print("before swapping: ","a=",a,"b=",b)

a,b=b,a

print("after swapping: ","a=",a,"b=",b)

Output:

enter a value: 4

enter b value: 5

before swapping:  a= 4 b= 5


after swapping:  a= 5 b= 4

how to check memory size of object in python

check memory size of objects:

import sys
sys.getsizeof(object)

note: 
memory represents in bytes

python 2.7.13

>>> import sys
>>> x=2
>>> type(x)
<type 'int'>
>>> sys.getsizeof(x)
12
>>> y=2.3
>>> sys.getsizeof(y)
16
>>> z=3+4j
>>> sys.getsizeof(z)
24
>>> a=True
>>> sys.getsizeof(a)
12
>>> b="siva"
>>> sys.getsizeof(b)
25
>>> c=[1,2,3]
>>> sys.getsizeof(c)
48
>>> c=[10,2.3,"siva"]
>>> sys.getsizeof(c)
48
>>> d=(1,2,3)
>>> sys.getsizeof(d)
40
>>> e={1,2,3}
>>> sys.getsizeof(e)
116
>>> f={'maths':75,'science':80}
>>> sys.getsizeof(f)
140
>>> 

python 3.6.2

>>> import sys
>>> x=2
>>> sys.getsizeof(x)
28
>>> y=2.3
>>> sys.getsizeof(y)
24
>>> z=3+4j
>>> sys.getsizeof(z)
32
>>> a=True
>>> sys.getsizeof(a)
28
>>> b="siva"
>>> sys.getsizeof(b)
53
>>> c=[1,2,3]
>>> sys.getsizeof(c)
88
>>> d=(1,2,3)
>>> sys.getsizeof(d)
72
>>> e={1,2,3}
>>> sys.getsizeof(e)
224
>>> f={'maths':75,'science':80}
>>> sys.getsizeof(f)
240

>>> 

merging or adding of two dictionaries

• merging or adding of two dictionaries this feature available from python 3.5 + versions on words.

Example:

x={'a':1,'b':2}

y={'c':3,'d':4}

z={'a':5,'b':6}

p={'a':5,'b':7}

xy={**x,**y}

print(xy)

xz={**x,**z}

print(xz)

zp={**z,**p}

print(zp)

Output:

{'a': 1, 'b': 2, 'c': 3, 'd': 4}

{'a': 5, 'b': 6}

{'a': 5, 'b': 7}

args and kwargs in python

Normal Arguments and arbitrary arguments and keyword arguments in python:

• Normal argument type depends on value/data

• Arbitrary argument by default type is tuple, Represents *

• keyword argument  by default type is dictionary,Represents **

Example:

def f1(req,*args,**kwargs):
    if req:
        print(req,type(req))
    if args:
        print(args,type(args))
    if kwargs:
        print(kwargs,type(kwargs))

f1(10)

f1(10,2.3,5,"siva")

f1(10,2.3,5,"siva",key1=20,key2="siva",key3=True)

Output:

10  <class 'int'>

10  <class 'int'>
(2.3, 5, 'siva')  <class 'tuple'>

10  <class 'int'>
(2.3, 5, 'siva')  <class 'tuple'>

{'key1': 20, 'key2': 'siva', 'key3': True}  <class 'dict'>