eval()

Author: PTHARRISH

Notes/Functions/eval().py

@@ -0,0 +1,44 @@
+# eval():
+# eval() is a built-in Python function that dynamically evaluates (executes)
+# a Python expression passed to it as a string.
+
+# It returns the result of the evaluated expression.
+
+# Example:
+result = eval("3 + 7")
+print(result)  # Output: 10
+
+
+# Why is it Useful?
+# Allows you to interpret and execute code contained in strings at runtime.
+# Useful when you need to process user input as code, evaluate mathematical formulas,
+# or perform operations that aren't known until the program is running.
+
+# How to Use eval()
+# Basic Usage:
+expression = "10 * (5 + 2)"
+output = eval(expression)
+print(output)  # Output: 70
+
+
+# Using with Variables:
+x = 5
+result = eval("x + 10")
+print(result)  # Output: 15
+
+list1 = eval(input("enter list: "))
+print("print a list using dynamic input ", list1)
+print("print the type of my_list", type(list1))
+
+# Real-World Use Cases
+# Calculator Apps:
+# If your program takes mathematical formulas as input
+# (like from a GUI calculator),
+# you can use eval() to compute the result.
+
+# Dynamic Formula Evaluation:
+# In spreadsheets or financial tools where users enter their own formulas.
+
+# Configuration or Scripting:
+# Some applications allow users or admins to script small behaviors
+# using Python code snippets.