Python Strings

 

Python string is the collection of the characters surrounded by single quotes, double quotes, or triple quotes.

#Using single quotes
str1 = 'Hello Python'
print(str1)
#Using double quotes
str2 = "Hello Python"
print(str2)

#Using triple quotes
str3 = '''''Triple quotes are generally used for
represent the multiline or
docstring'''
print(str3)

String Indexing

# Given String
str = "PYTHONSTRING"
# Start Oth index to end
print(str[0:])
# Starts 1th index to 4th index
print(str[1:5])
# Starts 2nd index to 3rd index
print(str[2:4])
# Starts 0th to 2nd index
print(str[:3])
#Starts 4th to 6th index
print(str[4:7])

str = 'PYTHONSTRING'
print(str[-1])
print(str[-3])
print(str[-2:])
print(str[-4:-1])
print(str[-7:-2])
# Reversing the given string
print(str[::-1])
print(str[-12])

Reassigning Strings

str = "HELLO"
str[0] = "h"
print(str)

1. str = "HELLO"
   print(str)
   str = "hello"
   print(str) 

Deleting the String

str = "HELLO"
del str[1]

str1 = "HELLO"
del str1
print(str1)

String Operators

str = "Hello"
str1 = " world"
print(str*3) # prints HelloHelloHello
print(str+str1)# prints Hello world
print(str[4]) # prints o
print(str[2:4]); # prints ll
print('w' in str) # prints false as w is not present in str
print('wo' not in str1) # prints false as wo is present in str1.
print(r'C://python37') # prints C://python37 as it is written
print("The string str : %s"%(str)) # prints The string str : Hello

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