1.Write a program to check given key is available or not:
txt = "I love many fruits, apple is my favorite fruit"
key = 'fruit'
l = len(key)
start = 0
end = l
while end<=len(txt):
if txt[start:end] == key:
print('Contains', key)
break
start+=1
end+=1
else:
print('Not Contains')
Contains fruit
2.Write a program to find given key position:
find() returns the position of where it was found.
txt = "Python is my Favourite Language"
key = 'Python'
l = len(key)
start = 0
end = l
while end<=len(txt):
if txt[start:end] == key:
print('Contains', key)
print(start,end-1)
break
start+=1
end+=1
else:
print('Not Contains')
Contains Python
0 5
3.Write a program to check the word starts with the specified key:
startswith() check if the string starts with the specified value.
txt = "Python is my Favourite Language"
key = 'Python'
l = len(key)
start = 0
end = l
while end<=len(txt):
if txt[start:end] == key:
if start==0:
print("Starts with", key)
break
start+=1
end+=1
else:
print('Not Contains')
Starts with Python
Another way to check the word starts with the specified key:
txt = "Apples are good, apple is my favorite fruit"
key = 'Apple'
l = len(key)
if txt[0:l]==key:
print('Starts with',key)
Starts with Apple
4.Write a program to check the word ends with the specified key:
endswith() check if the string ends with the specified value.
txt = "My Favourite Language is Python"
key = 'Python'
l = len(key)
start = 0
end = l
while end<=len(txt):
if txt[start:end] == key:
if end==len(txt):
print("Ends with", key)
break
start+=1
end+=1
else:
print('Not Contains')
Ends with Python
Another way to check the word ends with the specified key:
txt = "Apples are good, apple is my favorite fruit"
key = 'fruit'
l = len(key)
if txt[-l:]==key:
print('Ends with',key)
Ends with fruit
5.Write a program to check the given word is alpha or not:
isalpha() check all characters in the string are alphabet.
alpha = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
word = 'abcdEFGH'
for letter in word:
if letter not in alpha:
print('Not all are alphabets')
break
else:
print('All are alphabets')
All are alphabets
6.Write a program to check the given word is alnum or not:
isalnum() checks all characters in the string are alphanumeric.
alpha = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
word = '[email protected]'
for letter in word:
if letter not in alpha:
print('Not all are alphabets and numbers')
break
else:
print('All are alphabets and numbers')
Not all are alphabets and numbers
7.Write a program to check the given word is lowercase or not:
islower() checks all characters in the string are lower case.
alpha = 'abcdefghijklmnopqrstuvwxyz'
word = 'lakshmipritha'
for letter in word:
if letter not in alpha:
print('Not all are lowercase alphabets')
break
else:
print('All are lowercase alphabets')
All are lowercase alphabets
8.Write a program to check the given word is uppercase or not:
isupper() checks all characters in the string are upper case.
alpha = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
word = 'LAKSHMIPRITHA'
for letter in word:
if letter not in alpha:
print('Not all are uppercase alphabets')
break
else:
print('All are uppercase alphabets')
All are uppercase alphabets
Task:
1.Write a program to convert Uppercase into lowercase:
lower() converts a string into lower case.
txt = "HELLO, AND WELCOME TO MY WORLD!"
for letter in txt:
if letter>='A' and letter<'Z':
letter = ord(letter)+32
letter = chr(letter)
print(letter,end='')
hello, and welcome to my world!
2.Write a program to convert lowercase into uppercase:
upper() converts a string into upper case.
txt = "hello, and welcome to my world!"
for letter in txt:
if letter>='a' and letter<'z':
letter = ord(letter)-32
letter = chr(letter)
print(letter,end='')
HELLO, AND WELCOME TO MY WORLD!
3.Write a program to check space is available or not:
isspace() checks spaces in the text.
txt = 'Rose Is A Beautiful Flower'
if txt[0]>='A' and txt[0]<='Z':
i = 1
while i<len(txt):
if txt[i]>='A' and txt[i]<='Z':
if txt[i-1]==' ':
print("Space is there")
break
i+=1
else:
print("No space is there")
Space is there
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