CodeKaroYaaro PPT python 3
                                                                      PYTHON PROGRAMMING
                                                               PART(3)
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CONTROL FLOW AND FUNCTIONS
 What is Boolean value?
A Boolean value is either true or false. In Python, the two Boolean 
values are True and False (the capitalization must be exactly as 
shown), and the Python type is bool. >>> type(True)
 What is Boolean Expression? 
 A Boolean expression is an expression that evaluates to produce a 
result which is a Booleanvalue. For example, the operator == tests 
if two values are equal. It produces (or yields) aBoolean value: 
 >>> 5 == (3 + 2) # Is five equal 5 to the result of 3 + 2 ?
   True 
 What is meant by conditional If? 
The if statement in python is used to test a 
condition. If condition is true, statement of 
if block is executed otherwise it is skipped . 
Syntax of python if statement: 
if(condition): statements
 Write the syntax and usage of for loop 
For Loop is used to iterate a variable over a sequence(i.e., list 
or string) in the order that they appear. Syntax:
 
Forin :
  write the syntax and usage of for loop
 For Loop is used to iterate a variable over a 
sequence(i.e., list or string) in the order that they 
appear. Syntax: for in :
 Write the syntax and usage of while loop
 While Loop is used to execute number of statements or body till the 
condition passed in while is true. Once the condition is false, the control will 
come out of the loop.  
Syntax: 
   
while :
            :
            
            Body
 What is python break statement? 
Break statement is a jump statement that is used to pass 
the control to the end of the loop. Applying break 
statement makes the loop to terminate and controls goes 
to next line pointing after loop body
 W H A T  I S  C H A I N E D  C O N D I T I O N A L  S T A T E M E N T ?  
To check for mult iple condit ions el if  statement is used.This 
statement is l ike executing a if  statement inside a else statement. 
Syntax: i f  statement: 
        
         statements
 el if
 statement:
         statements 
 else:
         statements
 What is python break statement? 
Break statement is a jump statement that is used to pass the 
control to the end        
of the loop. Applying break statement makes the loop to 
terminate and controls goes to next line pointing after loop body.
What is python continue statement? 
Continue Statement is a jump statement that is used to skip 
the present          iteration and forces next iteration of loop 
to take place. It can be used in while as well as for loop 
statements.
What is python pass statement? 
When you do not want any code to execute, pass Statement is 
used. It is same as the name refers to. It just makes the control to 
pass by without executing any code.  
Syntax: 
          pass
 What is len function and explain how it is used on strings with an 
example. 
The len function, when applied to a string, returns the number or character in a string.      
Example: 
>>>book=‘Problem Solving and Python Programming’
>>>l
en (book) 
38
 >>> 
 Explain about string slicing with examples. 
A substring of a string is obtained by taking a slice. The operator [n:m] returns the 
part of the string from the nth character to the mth character, including the first but 
excluding the last. 
 >>>book=‘Problem Solving and Python 
 Programming‘ >>>print(book[0:7])
 Problem >>>print(book[21:27])
 python 
.What are the two operators that are used in string functions?
 
The in operator tests for membership. 
>>>‘V‘ in ‗VRB
‘ True >>>‘S‘ in ‗VRB‘ >>>False The not in operator returns the logical opposite results of in operator. 
>>>‘x‘ not 
in ‗VRB‘ 
True 
 What is the use of str.upper() and str.lower() functions in string?
 The functions str.upper() and str.lower() will return a string with all the letters of original string 
converted to upper or lower case letters. >>>ss=‘VRB Publishers
‘ >>>print(ss.
 upper())
 VRB 
PUBLISHE
 RS 
>>>print(ss
 .lower()) 
Vrb
 publishers
Explain string comparison with an example. 
The comparison operator works on string to check if two strings are equal. 
>>>word=‘VRB Publishers‘ >>>if word==‘VRB 
Publishers‘ Print(‗Both 
are Equal‘)
 Both are Equal 
How to split strings and what function is used to 
perform that operation? 
The str.split() method is used to split strings up. 
>>>book=‘Problem Solving and Python Programming‘ 
>>>print(book.split()) 
[‗Problem‘, ‗Solving‘, ‗and‘, ‗Python‘, ‗Programing‘]
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