Added python_list.py to Python-Basic-to-Advance repo

Author: amratadev

python_list.py

@@ -0,0 +1,38 @@
+#A R C – P I C S
+numbers = [10, 0, -1, 7]
+#names=['Amrata','Hrutuja','Sheetal']
+#mix_list=['Amrata',24,'BCS']
+print(numbers)          # [10, 0, -1, 7]
+
+print(numbers[0])       # 10 (first element)
+
+print(numbers.index(10))# 0 (index of value 10)
+
+numbers.append(5)       # adds 5 at the end
+print(numbers)          # [10, 0, -1, 7, 5]
+
+numbers.extend([40,50]) # adds all elements from another list
+print(numbers)          # [10, 0, -1, 7, 5, 40, 50]
+
+numbers.insert(0, 20)   # inserts 20 at index 0
+print(numbers)          # [20, 10, 0, -1, 7, 5, 40, 50]
+
+numbers.remove(10)      # removes the first occurrence of 10
+print(numbers)          # [20, 0, -1, 7, 5, 40, 50]
+
+print(numbers.pop())    # removes and returns last element → 50
+# list now: [20, 0, -1, 7, 5, 40]
+
+print(numbers.count(20))# counts occurrences of 20 → 1
+
+numbers.sort()          # sorts ascending
+print(numbers)          # [-1, 0, 5, 7, 20, 40]
+
+numbers.reverse()       # reverses order
+print(numbers)          # [40, 20, 7, 5, 0, -1]
+
+new_numbers = numbers.copy() # shallow copy
+print(new_numbers)      # [40, 20, 7, 5, 0, -1]
+
+numbers.clear()     #clear list
+print(numbers)