Preview
string functions in python 3 with examples
Click here for Quiz on Functions in Python
1. capitalize() function in Python 3
capitalize() function in Python makes first character of string capital.
Example
| >>> name=’lovejot’
>>> name.capitalize() #First character becomes capital |
2. find() function in Python 3
find() method in Python is used to find first index position of substring in a string value. It returns-1 if substring is not found.
Syntax:
String.find (Substr[,Start[,End]])
Substr refers to substring we want to find in String.
Start refers to starting index.
End refers to ending index of range in which we have to find substring.
Example
| >>> name=’lovejot’
>>> name.find(‘o’) #Index of first occurance of ‘o’ is shown i.e. 1. >>> name.find(‘o’,2,7) #Index of ‘o’ in index range 2,7 is shown i.e. 5. |
3. isalnum() function in Python 3
isalnum() method in Python return True if string contains alphabets or digits. There must be at least one character in String.
Example
| >>> name=’lovejot’
>>> name.isalnum() >>> name1=’lovejot2019′ >>> name1.isalnum() |
4. isalpha() function in Python 3
isalpha() method in Python return True if string contains alphabets only. There must be at least one character in String.
Example
| >>> name=’lovejot’
>>> name.isalpha() >>> name1=’lovejot2019′ >>> name1.isalpha() |
5. isdigit() function in Python 3
isdigit() method in Python return True if string contains digits only. There must be at least one character in String.
Example
| >>> name=’123′
>>> name.isdigit() >>> name1=’lovejot2019′ >>> name1.isdigit() |
Click here for Quiz on Functions in Python
6. islower() function in Python 3
islower() method in Python return True if string contains lower case alphabets only. There must be at least one character in String.
Example
| >>> name=’lovejot’
>>> name.islower() >>> name1=’Lovejot’ >>> name1.islower() #First character is capital in ‘Lovejot’. |
7. isupper() method in Python 3
isupper() method in Python return True if string contains upper case alphabets only. There must be at least one character in String.
Example
| >>> name=’LOVEJOT’
>>> name.isupper() >>> name1=’Lovejot’ >>> name1.isupper() #Only first character is Capital |
8. isspace() function in Python 3
isspace() method in Python return True if string contains space only. There must be at least one character in String.
Example
| >>> name=’ ‘
>>> name.isspace() >>> name1=” “ >>> name1.isspace() |
9. lower() function in Python 3
lower() method in Python converts string value into lowercase. There must be at least one character in String.
Example
| >>> name=’LOVEJOT ‘
>>> name.lower() >>> name1=”LOVEJOT2019“ >>> name1.lower() |
10. upper() function in Python 3
upper() method of Python converts string value into capital letters. There must be at least one character in String.
Example
| >>> name=’lovejot ‘
>>> name.upper() >>> name1=”lovejot2019“ >>> name1.upper() |
11. lstrip() function in Python 3
lstrip() method in Python removes spaces or specified character from the beginning of a string. There must be at least one character in String.
Syntax:
String. lstrip ([ Char])
Char refers to the character that needs to be removed from the beginning of a String. All consecutive occurrences of character will be removed.
Example
| >>> name=’ lovejot ‘;
>>> name.lstrip() #Spaces removed from the beginning >>> name1=’**lovejot**’ >>> name1.lstrip(‘*’) #*s removed from the beginning. |
12. rstrip() function in Python 3
rstrip() method in Python removes spaces or specified character from the end of a string. There must be at least one character in String.
Syntax:
String. rstrip ([ Char])
Char refers to the character that needs to be removed from the end of a String. All consecutive occurrences of character will be removed.
Example
| >>> name=’ lovejot ‘;
>>> name.rstrip() #Spaces removed from the end. >>> name1=’**lovejot**’ >>> name1.rstrip(‘*’) #*s removed from the end. |
Click here for Quiz on Functions in Python
Popular Books of Computer Science