If we reached the end of one of the tuples, the longer tuple is “larger”. If we exhaust both tuples and share the same data, the result is a tie, meaning that 0 is returned.

Example :

The following example shows the usage of cmp( ) method

#!/user/bin/python

tuple1, tuple2 = (123, ‘xyz’), (456, ‘abc’)

print cmp(tuple1, tuple2);

print cmp(tuple1, tuple1);

tuple3 = tuple2 + (786,);

print cmp (tuple2, tuple3)

Let us compile and run the above program, this will produce the following result :

-1

Question - 32 : -
Explain tuple(seq) function of the python also give example.

Answer - 32 : -

tuple(seq)

Description :

The method tuple( ) is used to convert list into a tuple.

Syntax :

Following is the syntax for tuple( ) method :

tuple (seq)

Parameters :

• seq – This is a list to be converted into tuple. Return Value :

This method returns the tuple.

Example :

The following example shows the usage of tupe( ) method.

# !/user/bin/python

aList = [123, ‘xyz’, ‘zara’, ‘abc’];

aTuple = tuple (aList)

print “Tuple elements :”,aTuple

Let us compile and run the above program, this will produce the followin’, result :

Tuple elements : (123, ‘xyz’, ‘zara’, ‘abc’)

Question - 33 : -
Write a program to input ‘n’ numbers and separate the tuple in the following manner.
Example
T=(10,20,30,40,50,60)
Tl=(10,30,50)
T2=(20,40,60)

Answer - 33 : -

t=tuple( )

n=input(” Enter number of values:”)

for i in range(n):

a=input(“enter elements”)

t=t+(a,)

t1=t2=tuple( )

for i in t:

if i%2 == 0:

t2= t2 + (i,)

else:

tl=tl+(i,)

print “First Tuple”

print t1

print “Second Tuple”

print t2

Output:

Enter number of values: 10

enter elements 1

enter elements 9

enter elements 8

enter elements 5

enter elements 2

enter elements 3

enter elements 6

enter elements 4

enter elements 7

enter elements 10

First Tuple (1, 9, 5, 3, 7)

Second Tuple (8,2,6,4,10)

Question - 34 : -
Write a program to input ‘n’ employees’ salary and find minimum & maximum salary among ‘n’ employees.

Answer - 34 : -

t=tuple( )

n=input(“Enter total number of employees”)

for i in range(n):

a=input(“enter salary of employee:”)

t=t+(a,)

print “maximum salary=”,max(t)

print “minimum salary=”,min(t)

Output :

Enter total number of employees 3

enter salary of employee: 7800

enter salary of employee: 8934

enter salary of employee:

6544 maximum salary = 8934

minimum salary = 6544

Question - 35 : -
How are dictionaries different from lists ?

Answer - 35 : -

The dictionary is similar to lists in the sense that it is also a collection of data-items just like lists but it is different form lists in the sense that lists are sequential collections and dictionaries are non-sequential collections. In lists, where there is an order associated with the data items because they act as storage units for other objects or variables created. Dictionaries are different from lists and tuples because the group of objects they hold are not in any particular order, but rather each object has its own unique name, commonly known as a key.

Question - 36 : -
When are dictionaries more useful than lists ?

Answer - 36 : -

Dictionaries can be much more useful than lists. For example : suppose we wanted to store all our friend’s cell phone numbers. We could create a list of pairs (phone number, name), but once this list becomes long enough searching this list for a specific phone number will get time consuming. Better would be if we could index the list by our friend’s name. This is precisely what a dictionary does.

Question - 37 : -
Explain cmp(dict1, dict2) with example.

Answer - 37 : -

Description

The method cmp( ) compares two dictionaries

based on key and values.

Syntax

Following is the syntax for cmp( ) method :

cmp(dict1, dict2)

Parameters

• dict1 – This is the first dictionary to be compared with dict2.

• dict2 – This is the second dictionary to be compared with dict1.

Return value :

This method returns 10 if both dictionaries are equal, – 1 if dictl < dict2 and 1 if dictl > dict2.

Example :

The following example shows the usage of comp( ) method.

# !/user/bin/python

dict1 = {‘Name’ : ‘Zara’, ‘Age’ : 7};

dict2 = {‘Name1 : ‘Mahnaz’, ‘Age’ : 27};

dict3 = {‘Name’ : ‘Abid’, ‘Age’ : 27);

dict4 = {‘Name’ : ‘Zara’, ‘Age’ : 7};

print “Return Value : %d”, % cmp (dict1, dict2)

print “Return Value : %d”, % cmp (dict2, dict3)

print “Return Value : %d”, % cmp (dictl, dict4)

Let us compile and run the above program, this will produce the following result :

Return Value : – 1 .

Return Value : 1

Return Value : 0

Question - 38 : -
Explain str(dict) with example.

Answer - 38 : -

Description

The method str( ) produces a printable string representation of a dictionary.

Syntax

Following is the syntax for str( ) method :

str(dict)

Parameters

• diet – This is the dictionary.

Return Value

This method returns string representation.

Example :

The following examples shows the usage of str() method.

# !/user/bin/python

diet = {‘Name’ :’Zara’, ‘Age’ : 7);

print “Equivalent String : %s” %str (dict)

Let us compile and run the above program, this will produce the following result :

Equivalent String : {‘Age’ : 7, ‘Name’ : ‘Zara’}

Question - 39 : -
Write a Python program to input ‘n’ names and phone numbers to store it in a dictionary and to input any name and to print the phone number of the particular name.

Answer - 39 : -

phonebook = dict( )

n = input (“Enter total number of friends”)

i = 1

while i<=n :

a = raw_input (“Enter name”)

b = raw_input (“Enter phone number”)

phonebook [a] = b

i = i + 1

name = raw_input (“Enter name”)

f = 0

l = phonebook.keys( )

for i in l :

if (comp (i, name) = = 0) :

print “Phone number =”, phonebook[i]

f = 1

if (f = = 0):

print “Given name not exist”

Question - 40 : -
Write a Python program to input ‘n’names and phone numbers to store it in a dictionary and to search and print the phone number of that particular name.

Answer - 40 : -

phonebook=dict( )

n=input(” Enter total number of friends to create a telephone book”)

i=l

while i<=n:

a=raw_input(“enter name”)

b=raw_input(“enter phone number”)

phonebook[a]=b

i=i+l

name=raw_input(“enter friend’s name to search for”)

f=0

l=phonebook.keys( )

for i in l:

if(cmp(i,name) == 0):

print “Phone number= “,phonebook[i]

f=l

if (f==0):

print “Given name not exist”

Output:

Enter total number of friends to create a telephone

book 5

enter name Ramu

enter phone number 9842311111

enter name Raju

enter phone number 9842309564

enter name Sarita

enter phone number 9842398765

enter name Sowmya

enter phone number 9842399922

enter name Karan

enter phone number 9842366554

enter friend’s name to search for Sarita

Phone number = 9842398765

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