Contact Book using Python
Contact Book using Python
In this article, we will make a contact book. For this we will create a class containing our contacts as lists. We will use two lists so that we can search by name and phone number both. Our class will contain different methods for different processes we will use.
At the end we will create a Command Line Interface for different operations to perform in the contact book.
Save the below code in a file named 'contact.py'.
class Contact:
def __init__(self):
self.book = []
self.names = []
self.numbers = []
def create(self, name, number, email):
self.book.append([name, number, email])
self.names.append(name)
self.numbers.append(number)
print(name, 'Contact created successfully..!')
def update(self, name=False, number=False):
# -------------------------------- Update Using Names ----------------------#
if name:
if name in self.names:
inames = [i for i, x in enumerate(self.names) if x == name]
print('No.of contacts found: ', len(inames), inames)
c = 1
for iname in inames:
print(c, 'name: ', self.names[iname],
'details: ', self.book[iname], '\n')
c += 1
d = 'y'
while d:
inp = input(
"Press 'y' to continue or exit to 'n': ").lower()
if inp == 'y':
nm_i = int(
input('Enter index of listed contact above: '))
try:
data = inames[nm_i-1]
print('\nDetails: ', self.book[data])
print(1, '- Name: ', self.book[data][0])
print(2, '- Number: ', self.book[data][1])
print(3, '- Email: ', self.book[data][2])
print(0, '- Exit')
v = 'y'
while v:
ch = int(
input('Enter index of listed contact above: '))
if ch == 1:
ch_name = input('Enter name to update: ')
self.book[data][0] = ch_name
self.names[data] = ch_name
elif ch == 2:
ch_number = input(
'Enter Number to update: ')
self.book[data][1] = ch_number
self.numbers[data] = ch_number
elif ch == 3:
ch_email = input('Enter Email to update: ')
self.book[data][2] = ch_email
elif ch == 0:
v = False
else:
v = False
print('#---------------- Updated contact -------------#')
print(self.book[data])
print(self.names[data])
print(self.numbers[data])
except:
print('Index not found..!')
else:
break
else:
print('No contact found..!')
# -------------------------------- Update Using Numbers ----------------------#
elif number:
if number in self.numbers:
inumbers = [i for i, x in enumerate(
self.numbers) if x == number]
print('No.of contacts found: ', len(inumbers))
c = 1
for inumber in inumbers:
print(
c, 'Number: ', self.numbers[inumber], 'details: ', self.book[inumber], '\n')
c += 1
d = 'y'
while d:
inp = input("Press 'y' to continue or exit to 'n': ")
if inp == 'y':
nm_i = int(
input('Enter index of listed contact above: '))
try:
data = inumbers[nm_i-1]
print('\nDetails: ', self.book[data])
print(1, '- Name: ', self.book[data][0])
print(2, '- Number: ', self.book[data][1])
print(3, '- Email: ', self.book[data][2])
print(0, '- Exit')
v = 'y'
while v:
ch = int(
input('Enter index of listed contact above: '))
if ch == 1:
ch_name = input('Enter name to update: ')
self.book[data][0] = ch_name
self.names[data] = ch_name
elif ch == 2:
ch_number = input(
'Enter Number to update: ')
self.book[data][1] = ch_number
self.numbers[data] = ch_number
elif ch == 3:
ch_email = input('Enter Email to update: ')
self.book[data][2] = ch_email
elif ch == 0:
v = False
else:
v = False
print('#---------------- Updated contact -------------#')
print(self.book[data])
print(self.names[data])
print(self.numbers[data])
except:
print('Index not found..!')
else:
break
else:
print('No contact found..!')
else:
print('No conatact Found..!')
#------------------------------ DELETE Contacts --------------------------#
def delete(self, name=False, number=False):
if name:
if name in self.names:
d = 'y'
while d:
inames = [i for i, x in enumerate(self.names) if x == name]
if len(inames) > 0:
print('No.of contacts found: ', len(inames), inames)
c = 1
for iname in inames:
print(
c, 'name: ', self.names[iname], 'details: ', self.book[iname], '\n')
c += 1
inp = input("Press 'y' to continue or exit to 'n': ")
if inp == 'y':
nm_i = int(
input('Enter index of listed CONTACT above: '))
try:
data = inames[nm_i-1]
print('\nDetails: ', self.book[data])
f = input(
'Are you sure want to DELETE..? (y/n): ').lower()
if f == 'y':
del self.book[data]
del self.numbers[data]
del self.names[data]
print(
'#---------------- Updated contact Book -------------#')
print('\nDetails: ', self.book)
print('\nName Entries: ', self.names)
print('\nNumber Entries: ', self.numbers)
except:
print('\nIndex not found..!')
else:
break
else:
print('0 contacts found..!')
break
else:
print('Contact not found..!')
elif number:
if number in self.numbers:
d = 'y'
while d:
inumbers = [i for i, x in enumerate(
self.numbers) if x == number]
if len(inumbers) > 0:
c = 1
for inumber in inumbers:
print(
c, 'number: ', self.numbers[inumber], 'details: ', self.book[inumber], '\n')
c += 1
inp = input("Press 'y' to continue or exit to 'n': ")
if inp == 'y':
nm_i = int(
input('Enter index of listed CONTACT above: '))
try:
data = inumbers[nm_i-1]
print('\nDetails: ', self.book[data])
f = input(
'Are you sure want to DELETE..? (y/n): ').lower()
if f == 'y':
del self.book[data]
del self.numbers[data]
del self.names[data]
print(
'#---------------- Updated contact Book -------------#')
print('\nDetails: ', self.book)
print('\nName Entries: ', self.names)
print('\nNumber Entries: ', self.numbers)
except:
print('\nIndex not found..!')
else:
break
else:
print('0 contacts found..!')
break
else:
print('No contact Found..!')
else:
print('No conatact Found..!')
#------------------------- PhoneBook ---------------------------#
def phonebook(self):
print('\nTotal Contacts found: ', len(self.book))
for contact in self.book:
print('\nName: ', contact[0])
print('Phone Number: ', contact[1])
print('Email: ', contact[2])
#-------------------------------------- Search Contact -----------------------------#
def search(self, number=False, name=False):
if name:
if name in self.names:
inames = [i for i, x in enumerate(self.names) if x == name]
c = 1
for iname in inames:
print(c, 'name: ', self.names[iname],
'details: ', self.book[iname], '\n')
c += 1
else:
print('No contact found..!')
elif number:
if number in self.numbers:
inumbers = [i for i, x in enumerate(
self.numbers) if x == number]
c = 1
for inumber in inumbers:
print(
c, 'number: ', self.numbers[inumber], 'details: ', self.book[inumber], '\n')
c += 1
else:
print('No contact found..!')
else:
print('No contact found..!')
menu = '''
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
'''
if __name__ == "__main__":
c = Contact()
a = True
while a:
print('\n', menu, '\n')
choice = int(input('\nEnter your Choice: '))
if choice == 1:
name = input('Name: ')
phone = input('Phone No.: ')
email = input('E-mail Address: ')
c.create(name, phone, email)
elif choice == 2:
k = True
while k:
print(
'''
1. Update through name
2. Update through number
3. Exit
'''
)
inp = int(input('Enter input: '))
if inp == 1:
name = input('Enter name: ')
c.update(name=name)
elif inp == 2:
number = input('Enter Number: ')
c.update(number=number)
else:
k = False
elif choice == 3:
c.phonebook()
elif choice == 4:
k = True
while k:
print(
'''
1. Search through name
2. Search through number
3. Exit
'''
)
inp = int(input('Enter input: '))
if inp == 1:
name = input('Enter name: ')
c.search(name=name)
elif inp == 2:
number = input('Enter Number: ')
c.search(number=number)
else:
k = False
elif choice == 5:
k = True
while k:
print(
'''
1. Delete through name
2. Delete through number
3. Exit
'''
)
inp = int(input('Enter input: '))
if inp == 1:
name = input('Enter name: ')
c.delete(name=name)
elif inp == 2:
number = input('Enter Number: ')
c.delete(number=number)
else:
k = False
elif choice == 6:
a = False
else:
break
We have created a menu with 6 options and we have methods in our class to perform each of these operations (except exit). The code is big because of the different operations we can perform but it is quite simple and intuitive.
To run the program, enter the following command in a Terminal/Command Line
python3 contact.py
A sample output will look like this
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 1
Name: Aniket
Phone No.: 9999123456
E-mail Address: email@example.com
Aniket Contact created successfully..!
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 3
Total Contacts found: 1
Name: Aniket
Phone Number: 9999123456
Email: email@example.com
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 2
1. Update through name
2. Update through number
3. Exit
Enter input: 1
Enter name: Aniket
No.of contacts found: 1 [0]
1 name: Aniket details: ['Aniket', '9999123456', 'email@example.com']
Press 'y' to continue or exit to 'n': y
Enter index of listed contact above: 1
Details: ['Aniket', '9999123456', 'email@example.com']
1 - Name: Aniket
2 - Number: 9999123456
3 - Email: email@example.com
0 - Exit
Enter index of listed contact above: 2
Enter Number to update: 9999912345
Enter index of listed contact above: 0
#---------------- Updated contact -------------#
['Aniket', '9999912345', 'email@example.com']
Aniket
9999912345
Press 'y' to continue or exit to 'n': n
1. Update through name
2. Update through number
3. Exit
Enter input: 2
Enter Number: 9999912345
No.of contacts found: 1
1 Number: 9999912345 details: ['Aniket', '9999912345', 'email@example.com']
Press 'y' to continue or exit to 'n': y
Enter index of listed contact above: 1
Details: ['Aniket', '9999912345', 'email@example.com']
1 - Name: Aniket
2 - Number: 9999912345
3 - Email: email@example.com
0 - Exit
Enter index of listed contact above: 1
Enter name to update: Aniket Sharma
Enter index of listed contact above: 0
#---------------- Updated contact -------------#
['Aniket Sharma', '9999912345', 'email@example.com']
Aniket Sharma
9999912345
Press 'y' to continue or exit to 'n': n
1. Update through name
2. Update through number
3. Exit
Enter input: 3
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 3
Total Contacts found: 1
Name: Aniket Sharma
Phone Number: 9999912345
Email: email@example.com
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 4
1. Search through name
2. Search through number
3. Exit
Enter input: 1
Enter name: Aniket Sharma
1 name: Aniket Sharma details: ['Aniket Sharma', '9999912345', 'email@example.com']
1. Search through name
2. Search through number
3. Exit
Enter input: 2
Enter Number: 9999912345
1 number: 9999912345 details: ['Aniket Sharma', '9999912345', 'email@example.com']
1. Search through name
2. Search through number
3. Exit
Enter input: 3
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 5
1. Delete through name
2. Delete through number
3. Exit
Enter input: 1
Enter name: Aniket Sharma
No.of contacts found: 1 [0]
1 name: Aniket Sharma details: ['Aniket Sharma', '9999912345', 'email@example.com']
Press 'y' to continue or exit to 'n': y
Enter index of listed CONTACT above: 1
Details: ['Aniket Sharma', '9999912345', 'email@example.com']
Are you sure want to DELETE..? (y/n): y
#---------------- Updated contact Book -------------#
Details: []
Name Entries: []
Number Entries: []
0 contacts found..!
1. Delete through name
2. Delete through number
3. Exit
Enter input: 3
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 3
Total Contacts found: 0
1.Create
2.Update
3.List Contacts
4.Search
5.Delete
6.Exit
Enter your Choice: 6
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