Predefined Character Classes Pattern Description Equivalent . Matches any character except newline \d Matches any digit [0-9] \D Matches any non-digit [^0-9] \w Matches any word character [a-zA-Z0-9_] \W Matches any non-word character [^a-zA-Z0-9_] \s Matches any whitespace character [ \t\n\r\f\v] \S Matches any non-whitespace character [^ \t\n\r\f\v] 1. Literal Character a Matches: The exact character…
In Python, lists are ordered, mutable collections that support various operations. Here are the key list operators along with four basic examples: List Operators in Python 4 Basic Examples 1. Concatenation (+) Combines two lists into one. python list1 = [1, 2, 3] list2 = [4, 5, 6] combined = list1 + list2 print(combined) # Output: [1, 2, 3,…
1. file.closed – Is the file door shut? Think of a file like a door. file.closed tells you if the door is open or closed. python # Open the file (open the door) f = open(“test.txt”, “w”) f.write(“Hello!”) print(f.closed) # Output: False (door is open) # Close the file (close the door) f.close() print(f.closed) # Output: True (door is…
What is the Random Module? The random module in Python is used to generate pseudo-random numbers. It’s perfect for: Random Module Methods with Examples 1. random() – Random float between 0.0 and 1.0 Generates a random floating-point number between 0.0 (inclusive) and 1.0 (exclusive). python import random # Example 1: Basic random float print(random.random()) # Output: 0.5488135079477204 # Example…
Keyword-Only Arguments in Python Keyword-only arguments are function parameters that must be passed using their keyword names. They cannot be passed as positional arguments. Syntax Use the * symbol in the function definition to indicate that all parameters after it are keyword-only: python def function_name(param1, param2, *, keyword_only1, keyword_only2): # function body Simple Examples Example 1: Basic Keyword-Only Arguments…
Basic Character Classes Pattern Description Example Matches [abc] Matches any single character in the brackets a, b, or c [^abc] Matches any single character NOT in the brackets d, 1, ! (not a, b, or c) [a-z] Matches any character in the range a to z a, b, c, …, z [A-Z] Matches any character in the range A to Z A, B, C, …, Z [0-9] Matches…