डिप्लोमा इन ऑफिस मैनेजमेंट एण्ड अकाउटिंग

डिप्लोमा इन ऑफिस मैनेजमेंट एण्ड अकाउटिंग

Full Stack Web Development with Laravel

Full Stack Web Development with Laravel

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Python string

In python, string is collection of characters surrounded by single, souble or triple quotes.

Creating a string

str= "CAPSCOM TECHNOLOGY"

Printing a string

print(str)

String indexing

String indexing start from 0
 
Example
print(str[0]) # C
print(str[5]) # O

String splitting 

Return part of a string
Example
print(str[0: 3]) # CAP
 
Note: 0 will be included whereas 3 will be excluded
 
Note: Item assignment is not possible in string
str[0]= 'T'
print(str) # it will return an error
 
Note: string is immutable means changing, deleting item in a string is not possible.
 

Deleting a string

Yes, whole string can be delete using del keyword
del str
print(str) # will throw error str is not defined.

String operators

+ Concat a string
* Replicate a string
in it is also know as membership operators, check sub string exist in a string or not
not in it is also know as membership operators, check sub string not exist in a string or not

String methods

count() Count how many time a given character appear in a string str="CAPSCOM"
print( str.count('C') )
endswith() Check string is end with given character or not str="CAPSCOM"
print( str.endswith('.') )
find() Return position of first occurance of given sub string from a string, if not found return -1 str="CAPSCOM"
print( str.find('Z') )
format() Format specified value in a string

age=20
print( "You are {} years old". format(age) )

index() Search a string and return index of specified sub string, and raise an exception when not found

str="CAPSCOM"
print( str.index('C') )

isalnum() Return true if all characters of a string are alphanumeric

 

isalpha() Return true if all characters of a string are alphabet

 

isdigit() Return true if all characters of a string are digits

 

islower() Return true if all characters of a string in lower case

 

isupper() Return true if all characters of a string in upper case

 

isspace() Return true if all characters of a string are whitespace

 

lstrip() Return a string after removing white space from left side of a string

 

rstrip() Return a string after removing white space from right side of a string

 

lower() Return lowercase string

 

upper() Return uppercase string

 

startswith() Return true if string start with given sub string

 

replace() Return new string by replacing a substring at specified string

 

join()

Takes items from iterable and join them together in a string with specified separator.

t = ("Computer", "UPS", "CPU")
print( "@".join(t) )
Output: Computer@UPS@CPU

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