2. Explain with examples:
i) isalpha()
ii) isalnum()
iii) isspace()
iv) isdcimal
v) istitle
Answer:
String Methods
i) isalpha()
Returns True if all characters in the string are only alphabets (A–Z or a–z).
print("Hello".isalpha()) # True
print("Hello123".isalpha()) # False
ii) isalnum()
Returns True if all characters are alphabets or numbers (no spaces or special characters).
print("Hello123".isalnum()) # True
print("Hello!".isalnum()) # False
iii) isspace()
Returns True if the string has only whitespace characters (like space, tab, newline).
print(" ".isspace()) # True
print("Hello World".isspace()) # False
iv) isdecimal()
Returns True if the string contains only numeric digits (0–9).
print("123".isdecimal()) # True
print("12.3".isdecimal()) # False
v) istitle()
Returns True if each word starts with an uppercase letter followed by lowercase letters (Title Case).
print("Python Is Fun".istitle()) # True
print("python is Fun".istitle()) # False