String Built in Methods

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String Built in Methods

  • capitalize() : converts the first character to upper case and rest to lower case.

 #program

 name = "techno Xpresss"
 print(name)
 name = name.capitalize()
 print(name)

 #Output

 techno Xpresss
 Techno xpresss


  • casefold() : Converts string into lower case.

 #program

 name = "Techno Xpresss"
 print(name)
 name = name.casefold()
 print(name)

 #Output

 Techno Xpresss
 techno xpresss


  • center() : Returns a centered string.


  • count() : Returns the number of times a specified value occurs in a string.

 #program

 name = "Techno Xpresss"
 print(name)
 count_e = name.count('e')
 print("count_e presents", count_e, "times")

 #Output

 Techno Xpresss
 count_e presents 2 times


  • encode() : Returns an encoded version of the string.


  • endswith() : Returns true if the string ends with the specified value.

 #program

 name = "Techno Xpresss"
 print(name)
 ends_with_sss = name.endswith('sss')
 print(ends_with_sss)
 ends_with_no = name.endswith('no')
 print(ends_with_no)

 #Output

 Techno Xpresss
 True
 False


  • expandtabs() : Sets the tab size of the string.


  • find() : Searches the string for a specified value and returns the position of where it was found

 #program

 name = "Techno Xpresss"
 print(name)
 position = name.find('sss')
 print("sss found at", position)
 print(name[position : : ])

 #Output
 Techno Xpresss
 sss found at 11
 sss


  • format() : Formats specified values in a string.


  • format_map() : Formats specified values in a string.


  • index() : Searches the string for a specified value and returns the position of where it was found.

 #program

 name = "Techno Xpresss"
 print(name)
 position_l = name.index('e')
 print("found at index : ", position_l)

 #Output

 Techno Xpresss
 found at index :  1


  • isalnum() : Returns True if all characters in the string are alphanumeric.

 #program

 name = "Techno Xpresss"
 age = "Twenty8"

 print(name)
 print(age)

 result = name.isalnum()
 print(name, "is alphanumeric : ", result)
 result = age.isalnum()
 print(age, "is alphanumeric : ", result)

 #Output

 Techno Xpresss
 Twenty8
 Techno Xpresss is alphanumeric :  False
 Twenty8 is alphanumeric :  True


  • isalpha() : Returns True if all characters in the string are in the alphabet.

 #program

 name = "Techno Xpresss"
 age = "TwentyEight"
 marks = "Eighty8"

 print(name)
 print(age)
 print(marks)

 result = name.isalpha()
 print(name, "is alpha : ", result)
 result = age.isalpha()
 print(age, "is alpha : ", result)
 result = marks.isalpha()
 print(marks, "is alpha : ", result)

 #Output

 Techno Xpresss
 TwentyEight
 Eighty8
 Techno Xpresss is alpha :  False    # space is not an alphabet
 TwentyEight is alpha :  True
 Eighty8 is alpha :  False


  • isdecimal() : Returns True if all characters in the string are decimals.

 #program

 name = "Techno Xpresss"
 age = "28"

 print(name)
 print(age)

 result = name.isdecimal()
 print(name, "have all decimal members : ", result)
 result = age.isdecimal()
 print(age, "have all decimal members  : ", result)

 #Output

 Techno Xpresss
 28
 Techno Xpresss have all decimal members :  False
 28 have all decimal members  :  True


  • isdigit() : Returns True if all characters in the string are digits.

 #program

 name = "Techno Xpresss"
 age = "28"

 print(name)
 print(age)

 result = name.isdigit()
 print(name, "have all degits : ", result)
 result = age.isdigit()
 print(age, "have all digits  : ", result)

 #Output

 Techno Xpresss
 28
 Techno Xpresss have all degits :  False
 28 have all digits  :  True


  • isidentifier() : Returns True if the string is an identifier.


  • islower() : Returns True if all characters in the string are lower case

 #program

 name = "Techno Xpresss"
 age = "twenty eight"

 print(name)
 print(age)

 result = name.islower()
 print(name, "have all lower case : ", result)
 result = age.islower()
 print(age, "have all lowercase  : ", result)

 #Output

 Techno Xpresss
 twenty eight
 Techno Xpresss have all lower case :  False
 twenty eight have all lowercase  :  True


  • isnumeric() : Returns True if all characters in the string are numeric.

 #program

 name = "Techno Xpresss"
 age = "28"

 print(name)
 print(age)

 result = name.isnumeric()
 print(name, "have all numeric : ", result)
 result = age.isnumeric()
 print(age, "have all numeric  : ", result)

 #Output

 Techno Xpresss
 28
 Techno Xpresss have all numeric :  False
 28 have all numeric  :  True


  • isprintable() : Returns True if all characters in the string are printable.

 #program

 name = "Techno Xpresss"
 age = "28"

 print(name)
 print(age)

 result = name.isprintable()
 print(name, "have all printable members : ", result)
 result = age.isprintable()
 print(age, "have all printable members  : ", result)

 #Output

 Techno Xpresss
 28
 Techno Xpresss have all printable members :  True
 28 have all printable members  :  True


  • isspace() : Returns True if all characters in the string are whitespaces.

 #program

 name = "Techno Xpresss"
 age = "             "

 print(name)
 print(age)

 result = name.isspace()
 print(name, "have all whitespace : ", result)
 result = age.isspace()
 print(age, "have all whitespace  : ", result)

 #Output

 Techno Xpresss

 Techno Xpresss have all whitespace: False
                have all whitespace: True


  • istitle() : Returns True if the string follows the rules of a title.

 #program

 name = "My Name Is Techno Xpresss"
 name_1 = "my name is Techno Xpresss"

 print(name)
 print(name_1)

 result = name.istitle()
 print(name, "have all whitespace : ", result)
 result = name_1.istitle()
 print(name_1, "have all whitespace  : ", result)

 #Output

 My Name Is Techno Xpresss
 my name is Techno Xpresss
 My Name Is Techno Xpresss have all whitespace :  True  #1st member of each word is upper case
 my name is Techno Xpresss have all whitespace  :  False


  • isupper() : Returns True if all characters in the string are upper case.

 #program

 name = "Techno Xpresss"
 name_1 = "TECHNO XPRESSS"

 print(name)
 print(name_1)

 result = name.isupper()
 print(name, "have all upper case : ", result)
 result = name_1.isupper()
 print(name_1, "have all upper case : ", result)
 
#Output

 Techno Xpresss
 TECHNO XPRESSS
 Techno Xpresss have all upper case :  False
 TECHNO XPRESSS have all upper case :  True


  • join() : Joins the elements of an iterable to the end of the string.

 #program

 name = "-Techno Xpresss "
 name_1 = "TECHNO"

 print(name)
 print(name_1)

 result = name.join(name_1)
 print(result)

 #Output

 -Techno Xpresss 
 TECHNO
 T-Techno Xpresss E-Techno Xpresss C-Techno Xpresss H-Techno Xpresss N-Techno Xpresss O


  • ljust() : Returns a left justified version of the string.


  • lower() : Converts a string into lower case.

 #program

 name = "Techno Xpresss "
 name_1 = "TECHNO"

 print(name)
 print(name_1)

 result = name.lower()
 print(result)
 result = name_1.lower()
 print(result)

 #Output

 Techno Xpresss 
 TECHNO
 techno xpresss 
 techno


  • lstrip() : Returns a left trim version of the string.


  • maketrans() : Returns a translation table to be used in translations.


  • partition() : Returns a tuple where the string is parted into three parts.

 #program

 name = "Techno Xpresss "
 name_1 = "TECHNO"

 print(name)
 print(name_1)

 result = name.partition(name)
 print(result)
 result = name_1.partition(name_1)
 print(result)

 #Output

 Techno Xpresss 
 TECHNO
 ('', 'Techno Xpresss ', '')
 ('', 'TECHNO', '')


  • replace() : Returns a string where a specified value is replaced with a specified value.

 #program

 name = "Techno Xpresss "
 print(name)

 result = name.replace("sss", "SSS", 3)
 print(result)

 #Output

 Techno Xpresss 
 Techno XpreSSS


  • rfind() : Searches the string for a specified value and returns the last position of where it was found.

 #program

 name = "Techno Xpresss "
 print(name)

 position = name.find("e")
 print("1st occurance at index  :", position)
 position = name.rfind("e")
 print("last occurance at index :", position)

 #Output

 Techno Xpresss 
 1st occurance at index  : 1
 last occurance at index : 10


  • rindex() : Searches the string for a specified value and returns the last position of where it was found.

 #program

 name = "Techno Xpresss"
 print(name)
 position_l = name.index('e')     # search from left
 position_r = name.rindex('e')    # search from right
 print("found at index : ", position_l)
 print("found at index : ", position_r)

 #Output

 Techno Xpresss
 found at index :  1
 found at index :  10


  • rjust() : Returns a right justified version of the string.


  • rpartition() : Returns a tuple where the string is parted into three parts.


  • rsplit() : Splits the string at the specified separator, and returns a list.


  • rstrip() : Returns a right trim version of the string


  • split() : Splits the string at the specified separator, and returns a list.

 #program

 name = "Techno Xpresss "
 print(name)

 result = name.split()
 print("result :", result)
 result = name.split('e')
 print("result :", result)

 #Output

 result : ['Techno', 'Xpresss']
 result : ['T', 'chno Xpr', 'sss ']


  • splitlines() : Splits the string at line breaks and returns a list.

 #program

 name = "Techno Xpresss\nage is 28\nmarks scored 80.72% \n"
 print(name)

 result = name.splitlines()
 print("result :", result)

 #Output

 Techno Xpresss
 age is 28
 marks scored 80.72% 

 result : ['Techno Xpresss', 'age is 28', 'marks scored 80.72% ']


  • startswith() : Returns true if the string starts with the specified value.

 #program

 name = "Techno Xpresss"
 print(name)

 result = name.startswith('T')
 print(name, "starts with T :", result)
 result = name.startswith('X')
 print(name, "starts with X :", result)

 #Output

 Techno Xpresss
 Techno Xpresss starts with T : True
 Techno Xpresss starts with X : False


  • strip() : Returns a trimmed version of the string.


  • swapcase() : Swaps cases, lower case becomes upper case and vice versa.

 #program

 name = "Techno Xpresss"
 print(name)

 result = name.swapcase()
 print(result)

 #Output

 Techno Xpresss
 tECHNO xPRESSS


  • title() : Converts the first character of each word to upper case.

 #program

 name = "techno xpresss"
 print(name)

 result = name.title()
 print(result)

 #Output

 techno xpresss
 Techno Xpresss


  • translate() : Returns a translated string.


  • upper() : Converts a string into upper case.

 #program

 name = "techno xpresss"
 print(name)

 result = name.upper()
 print(result)

 #Output

 techno xpresss
 TECHNO XPRESSS


  • zfill() : Fills the string with a specified number of 0 values at the beginning.














 

Location: Bengaluru, Karnataka, India

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