My Python Learning Journey

Hello Python (Introduction)

Welcome to my Python learning journey. As a computer-science student diving in the world of python. This README provides an overview of the different python concepts and functionalities i have explored and implemented.

Learning the basic operations

In learning the basic operaions i begun my learning journey, by learning the fundamental arithemetic operations.. These are very essential for any programming language.

# Addition
print(4 + 5)

# Subtraction
print(8 - 5)

# Multiplication
print(5 * 3)

# Division
print(10 / 2)

List and Tuples

In managing and organizing code, list and tuples are important data structures these are powerful ordered collections.

Lists :
- lists are mutable and they allow for dynamic modification of their elements
Tuples
- tuples are immutable and they offer the added benefit of being faster and memory efficient.

Lists

A = (0, 1, 2, 3, 4, 5, 6)
print(A[6])
print(A[-1])

# Slicing a list
B = ["a", "b", "c", "d", "e", "f", "g"]
print(B[2:])

Tuples

# Creating and indexing tuples
tuple1 = ("disco", 10, 1.5)
print(type(tuple1))
print(tuple1[0])
print(tuple1[1])
print(tuple1[2])

# Negative indexing
print(tuple1[-1])
print(tuple1[-2])
print(tuple1[-3])

# Concatenation of tuples
tuple2 = tuple1 + ("hard rock", 10)
print(tuple2)

# Slicing tuples
print(tuple2[0:3])
print(tuple2[3:4])
print(tuple2[3:5])
print(tuple1[0:2])

# Sorting tuples
tuple3 = (0, 9, 6, 5, 10, 8, 9, 6, 2)
tupleSort = sorted(tuple3)
print(tupleSort)

# Nesting tuples
NestTuple = (1, 2, ("pop", "rock"), (3, 4), ("disco", (1, 2)))
print(NestTuple[0])
print(NestTuple[1])
print(NestTuple[2])
print(NestTuple[3])
print(NestTuple[4])
print("Element 2, 0 of Tuple:", NestTuple[2][0])
print("Element 2, 1 of Tuple:", NestTuple[2][1])
print("Element 3, 0 of Tuple:", NestTuple[3][0])
print("Element 3, 1 of Tuple:", NestTuple[3][1])
print("Element 4, 0 of Tuple:", NestTuple[4][0])
print("Element 4, 1 of Tuple:", NestTuple[4][1])

String

In python string manipulation involve various operations that help modify and prcess strings. This is important because they are essential for data manipulation, text processing and generating dynamic content.

Example

# String slicing and indexing
Numbers = "0123456"
print(Numbers[::2])
print("0123456".find('1'))

name = "Micheal Jackson"
print(name[0])
print(name[6])
print(name[13])
print(name[-1])
print(name[-15])
print(len(name))
print(name[0:4])
print(name[8:12])
print(name[::2])
print(name[0:5:2])

# String concatenation
statement = name + " " + "Is the best"
print(statement)

# Repeating strings
print(3 * name)
name = name + " " + "Dances Pretty well."
print(name)

# Escape sequences
print("Micheal Jackson \n is the best")
print("Micheal Jackson \t is the best")
print("Micheal Jackson is \\ the best")
print(r"Micheal Jackson \ is the best")

# String methods
a = "Thriller is his sixth studio album"
print("Before applying upper:", a)
b = a.upper()
print("After applying upper:", b)

a = "MICHEAL JACKSON IS THE BEST"
print("Before applying lower:", a)
b = a.lower()
print("After applying lower:", b)

a = "Micheal Jackson is the best0"
b = a.replace('Micheal', 'KingKrule')
print(b)

test_string = "Hello! Micheal Jackson has: 42 Characters."
print(len(test_string))
b = test_string.replace('!', ' ').replace(':', ' ').replace('.', ' ')
print(b)

# String find method
artist_name = "King Krule"
print(artist_name.find("Kr"))
print(artist_name.find("Krule"))
print(artist_name.find("qwertyuiop"))

# String split method
splitting_string = artist_name.split()
print(splitting_string)

RegEx (Regular Expressions)

regex in python are used in matching strings of text i.e characters, patterns or patterns of characters.

import re

# Search method
sl = "This is me testing RegEx!"
pattern = r"testing"
search_result = re.search(pattern, sl)
if search_result:
    print("Match Found!!!")
else:
    print("Match Not Found!")

# Matching digits
my_pattern = r"\d\d\d\d\d\d\d\d\d\d"
text1 = "My Phone Number is 1234567890"
match = re.search(my_pattern, text1)
if match:
    print("Phone number found!!!", match.group())
else:
    print("No Match!")

# Finding non-word characters
my_pattern2 = r"\W"
text2 = "Hello-world!!!"
matches = re.findall(my_pattern2, text2)
print("Matches:", matches)

# Find all occurrences
s2 = "Micheal Jackson was a singer and Known as the King of Pop!!"
the_result = re.findall("as", s2)
print(the_result)

# Split method
splitting_array = re.split("\s", s2)
print(splitting_array)

# Sub method
my_pattern3 = r"King of Pop"
replacement = "legend"
new_string = re.sub(my_pattern3, replacement, s2, flags=re.IGNORECASE)
print(new_string)

# Search for digits
the_pattern = "House number-20111"
the_pattern = re.search("\d", the_pattern)
if the_pattern:
    print("Digit found in the Pattern")
else:
    print("Digit not Found in the Pattern!")

# Replace substring
strl = "The quick brown fox jumps over the lazy dog."
strl2 = r"fox"
replacement_word = "bear"
new_strl = re.sub(strl2, replacement_word, strl, flags=re.IGNORECASE)
print(new_strl)

# Find all occurrences of a substring
strl3 = "How much wood would a woodchuck chuck, if a woodchuck could chuck wood?"
finding = re.findall("woo", strl3)
print(finding)

Lawani-EJ/Hello-Python