feat:new examples

Day-02/examples/03-regex-findall.py

@@ -1,10 +1,83 @@
 import re
 
-text = "The quick brown fox"
-pattern = r"brown"
-
-search = re.search(pattern, text)
-if search:
-    print("Pattern found:", search.group())
-else:
-    print("Pattern not found")
+# BEGINNER REGEX EXAMPLES - Step by Step Learning
+
+print("=== BASIC REGEX PATTERNS ===\n")
+
+# Example 1: Finding simple words
+text1 = "I love Python programming and Python is easy"
+pattern1 = r"Python"  # Just finds the exact word "Python"
+matches1 = re.findall(pattern1, text1)
+print(f"Text: {text1}")
+print(f"Pattern: {pattern1}")
+print(f"Matches: {matches1}")
+print()
+
+# Example 2: Finding digits
+text2 = "I have 5 apples and 10 oranges"
+pattern2 = r"\d"  # \d means any digit (0-9)
+matches2 = re.findall(pattern2, text2)
+print(f"Text: {text2}")
+print(f"Pattern: {pattern2} (\\d means any digit)")
+print(f"Matches: {matches2}")
+print()
+
+# Example 3: Finding multiple digits together
+text3 = "I have 25 apples and 100 oranges"
+pattern3 = r"\d+"  # \d+ means one or more digits together
+matches3 = re.findall(pattern3, text3)
+print(f"Text: {text3}")
+print(f"Pattern: {pattern3} (\\d+ means one or more digits)")
+print(f"Matches: {matches3}")
+print()
+
+# Example 4: Finding words (letters only)
+text4 = "Hello123 World456 Python"
+pattern4 = r"[a-zA-Z]+"  # [a-zA-Z]+ means one or more letters
+matches4 = re.findall(pattern4, text4)
+print(f"Text: {text4}")
+print(f"Pattern: {pattern4} (letters only)")
+print(f"Matches: {matches4}")
+print()
+
+# Example 5: Finding words that start with capital letter
+text5 = "Python is Great for Data Science"
+pattern5 = r"[A-Z][a-z]+"  # [A-Z] = capital letter, [a-z]+ = lowercase letters
+matches5 = re.findall(pattern5, text5)
+print(f"Text: {text5}")
+print(f"Pattern: {pattern5} (capital letter + lowercase letters)")
+print(f"Matches: {matches5}")
+print()
+
+# Example 6: Finding email pattern (simplified)
+text6 = "Contact me at [email protected] or [email protected]"
+pattern6 = r"\w+@\w+\.\w+"  # \w+ = word characters, @ = literal @, \. = literal dot
+matches6 = re.findall(pattern6, text6)
+print(f"Text: {text6}")
+print(f"Pattern: {pattern6} ([email protected])")
+print(f"Matches: {matches6}")
+print()
+
+# Example 7: Finding phone numbers (simple pattern)
+text7 = "Call me at 123-456-7890 or 555-123-4567"
+pattern7 = r"\d{3}-\d{3}-\d{4}"  # \d{3} = exactly 3 digits
+matches7 = re.findall(pattern7, text7)
+print(f"Text: {text7}")
+print(f"Pattern: {pattern7} (3digits-3digits-4digits)")
+print(f"Matches: {matches7}")
+print()
+
+print("=== REGEX CHEAT SHEET ===")
+print("\\d    = any digit (0-9)")
+print("\\w    = any word character (letters, digits, underscore)")
+print("\\s    = any whitespace (space, tab, newline)")
+print("+     = one or more of the previous character")
+print("*     = zero or more of the previous character")
+print("?     = zero or one of the previous character")
+print("{3}   = exactly 3 of the previous character")
+print("[a-z] = any lowercase letter")
+print("[A-Z] = any uppercase letter")
+print("[0-9] = any digit (same as \\d)")
+print(".     = any character except newline")
+print("^     = start of string")
+print("$     = end of string")

Day-02/examples/test.py

@@ -0,0 +1,4 @@
+name="shivam"
+name1="tiwari"
+print(name+" "+name1)
+print(len(name+name1))