String Methods

'''
Strings are immutable.
String methods work on our existing string and produce another string as per our requirement, but do not change our existing string.
'''

name = "Sindhu"
print(len(name))           #output = 6

#1.upper()
print(name.upper())        #output = SINDHU
#It converts the string into an upper case.

#2.lower()
print(name.lower())        #output = sindhu
#It converts the string into a lower case.

#3.rstrip()
name1 = "Sindhu!!!"
print(name1.rstrip("!"))   #output = Sindhu
name2 = "Shilpa??"
print(name2.rstrip("?"))   #output = Shilpa
name3 = "@Prasad"
print(name3.rstrip("@"))   #output = @Prasad
#It removes only the trailing characters.
#It does not remove the leading characters.

#4.replace()
print(name.replace("Sindhu" , "Asish"))     #output = Asish
name4 = "Sindhu @ Sindhu"
print(name4.replace("Sindhu" , "Asish"))    #output = Asish @ Asish
#It replaces all datas of a string with another string that we want to replace.

#5.split()
print(name4.split(" "))      #output = ['Sindhu' , '@' , 'Sindhu']
#It splits the given string and returns the separated strings as list items.

#6.capitalize()
BlogHeading = "introduction to python"
print(BlogHeading.capitalize())   #output = Introduction to python
BlogHeading1 = "inTroductioN tO pytHon"
print(BlogHeading1.capitalize())   #output = Introduction to python
#It turns only the first character of the string into upper case and the rest other characters into lower case.
#It has no effect if any of the characters of the string is already upper case or lower case.

#7.center()
str = "Welcome to the console!!"
print(len(str))      #output = 24
print(str.center(50))    
#output = Welcome to console!!(after 25 spaces from the starting)
print(len(str.center(50)))    #output = 50
#It aligns the string to the center as per the instructions given by the user.

#8.count()
print(name4.count("Sindhu"))      #output = 2
#It counts the number of times the given value has occurred within a given string.

#9.endswith()
print(str.endswith("!"))         #output = True
#It checks if the string ends with a given value.If yes,then returns True, else returns False.

#We can also check for a value in-between the string by providing start and end index positions.
print(str.endswith("to", 4,10))     #output = True

#10.find()
str1 = "Sindhu is a beautiful girl. Sindhu is an intelligent girl."
print(str1.find("is"))              #output = 7
#It searches for the first occurrence of the given value in the string and returns its index position at where it is present.
print(str1.find("the"))            #output = -1
#If the given value is absent from the string, then it returns -1

#11.index()
print(str1.index("is"))           #output = 7
#print(str1.index("the"))         #output = valueError:substring not found

#12.isalnum()
str2 = "Iam23yearsold"
print(str2.isalnum())            #output = True
str3 = "I am 23 years old."
print(str3.isalnum())            #output = False
#It returns True only if the entire string only consists of A-Z, a-z, 0-9.
#It returns False if the string consists of any other characters or space.

#13.isalpha()
str4 = "MynameisSindhu"
print(str4.isalpha())            #output = True
print(str2.isalpha())            #output = False
print(str3.isalpha())            #output = False
#It returns True only if the entire string only consists of A-Z, a-z.
#It returns False if the strinf consists of any other characters or space or  0-9.

#14.islower()
str5 = "my name is sindhu"
print(str5.islower())           #output = True
str6 = "My name is Sindhu"
print(str6.islower())           #output = False
print(str4.islower())           #output = False
#It returns True only if all the characters of the string are in lower case, else it returns False.

#15.isprintable()
str6 = "Wish you a Merry Christmas"
print(str6.isprintable())      #output = True
#It returns true if all the values within the string are printable.
str7 = "Wish you a Merry Christmas \n"
print(str7.isprintable())     #output = False
#It returns False if any of the characters within the string(here \n) are not printable.

#16.isspace()
str8 = "        "            #using spacebar
print(str8.isspace())        #output = True
str9 = "    "                #using tab
print(str9.isspace())        #output = True
str10 = ""                   #no space
print(str10.isspace())       #output = False
# It returns True only if the string contains white space(either using spacebar or tab),else returns False.

#17.istitle()
str11 = "Sindhupriya Choudhury"
print(str11.istitle())        #output = True
str12 = "sindhupriya choudhury"
print(str12.istitle())        #output = False
str13 = "sinDhupriyA ChoudHury" 
print(str13.istitle())        #output = False
#It returns True only if the first letter of each word of the string is capitalized, else returns False.

#18.isupper()
str14 = "SINDHUPRIYA CHOUDHURY"
print(str14.isupper())       #output = True
#It returns True only if all the characters of the string are capitalized, else it returns False.

#19.startswith()
str15 = "Sindhu is a beautiful girl"
print(str15.startswith("Sindhu")) #output = True
print(str15.startswith("girl"))   #output = False
#It checks if the string starts with a given value. If yes, it returns True, else it returns False.

#20.swapcase()
print(str15.swapcase())
#output = sINDHU IS A BEAUTIFUL GIRL
#It converts the upper case into lower case and vice-versa.

#21.title()
print(str15.title())     #output = Sindhu Is A Beautiful Girl
#It capitalizes the first character of each word within a string.






Comments

Post a Comment

Popular posts from this blog

Print Function

#To print something in Python, we write print( ) #print is a function to perform any task. print("Hello World")                                    #output - Hello World #We use double quotes " " to make the object valid and to make it a string. #We can also use single quotes ' ' for the same. print('Hello World')                                      #output = Hello World print(5)                                                         #output - 5 #We didn't use double quote or single quote here as 5 is a number(a valid object) #To print multiple lines in print function, we use triple single or double quotes. print('''Hi How are you? I am good, Thank you''' print(...
Read more

Arithmetic Operators

 ''' Python has different types of operators. To create a calculator we require arithmetic operators. Operator        Operator Name                     Example +                Addition                                      24+9 -                Subtraction                                  24-9 *                Multiplication                             24*9 /                Division                                  ...
Read more

Sets in Python

''' Python Sets: In Python, a set is an unordered collection of unique elements.  Sets are useful when we need to store a collection of items without any duplicates. Key Characteristics of Sets: 1. Unordered: The items have no defined order, and their position can change. 2. Unique Elements: No duplicate values are allowed. 3. Mutable: Sets can be modified after creation (elements can be added or removed). 4. Heterogeneous: A set can contain elements of different data types. ''' s1 = {1, 2, 3, 4} print(s1)                #output = {1, 2, 3, 4} s2 = {1, 1, 2, 3, 4, 4} print(s2)                #output = {1, 2, 3, 4}   #Duplicates are automatically removed info = {"Sindhu", 24, True, 2002} print(info)              #output = {24, True, 2002, 'Sindhu'}  #Here we can see that the items in set occur in random order, and hence they cannot be accessed using index...
Read more