Python

Logical operator:

Operator	Example	Description
and	Input: 1 == 1 and 2 < 4 Output: True Input: 1 == 1 and 2 != 2 Output: False	Both condition must True.
or	Input: 1 == 1 or 2 < 4 Output: True Input: 1 == 1 or 2 != 2 Output: True	One of the condition from both must True.
not	Input: not 1 != 2 Output: True Input: not 1 == 1 Output: False	Negection of actual result.

IF, ELIF and ELSE statement:

• Syntax of an IF statement

   if some_condition :
       # execute_some_condition
  

• Syntax of an IF ELSE statement

   if some_condition :
       # execute_some_condition
   else :
       # do something else
  

• Syntax of an IF ELIF ELSE statement

   if some_condition :
       # execute_some_condition
   elif some_other_condition :
       # do something different
   else :
       # do something else
  

FOR LOOP statement:

• Syntax of an FOR LOOP statement

    myList = [1, 2, 3, 4, 5]
    for item in myList:
       print(item)
  

Example

	# Iterating to print element from list.
	myList = [1, 2, 3, 4, 5]
	for item in myList:
		print(item)
	Output:
	1
	2
	3
	4
	5

	# Iterating to print characters from Hello string.
	for item in 'Hello':
		print(item)
	Output:
	H
	e
	l
	l
	0

	# Iterating to print value from tuple object.
	tupleVar = (1, 2, 3, 4)
	for value in tupleVar:
		print(value)
	Output:
	1
	2
	3
	4

tuples packing and unpacking using FOR LOOP

tuple Example

	myList = [(1, 2), (3, 4), (5, 6)]
	for tupleValues in myList:
		print(tupleValues)
	Output:
	(1, 2)
	(3, 4)
	(5, 6)
	
	for a, b in myList:
		print(a)
		print(b)
	Output:
	1
	2
	3
	4
	5
	6

dictionary Example

	myDict = {'name': 'John', 'email': 'john@gmail.com', 'address': 'Pune' }
	#Printing all keys from dictionary.
	for item in myDict:
		print(item)
	Output:
	name
	email
	address

	#Printing all key and value from dictionary.
	for item in myDict.items():
		print(item)
	Output:
	('name', 'John')
	('email', 'john@gmail.com')
	('address', 'Pune')

	#Printing all key and value from dictionary.
	for key, value in myDict.items():
		print('key {} value is {}'.format(key, value))
	Output:
	key name value is John
	key email value is john@gmail.com
	key address value is Pune
	
	#Printing all value from dictionary.
	for value in myDict.values():
		print(value))
	Output:
	John
	john@gmail.com
	Pune

### WHILE LOOP statement:

syntax

	while some_condition:
		//do something
	else:
		//do something different

Example 1

	num = 0
	while num < 5:
		print('Number {}'.format(num))
		num += 1
	Output:
	Number 0
	Number 1
	Number 2
	Number 3
	Number 4

Example 2

	num = 0
	while num < 5:
		print('Number {}'.format(num))
		num += 1
	else:
		print('Number is greater than 5')
	Output:
	Number 0
	Number 1
	Number 2
	Number 3
	Number 4
	Number is greater than 5

break, continue and pass statements in LOOP:

We can use break, continue and pass statements in our loop to add additional functionality for various cases.

Statement	Description
break	Breaks out of the current closest enclosing loop
continue	Goes to the top of the closest enclosing loop
pass	does nothing at all

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