Add Python sheet

python.md

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+# Python Cheat Sheet
+
+## Variables and Data Types
+
+### Variables
+# Declaring a variable
+x = 5
+# Reassigning a variable
+x = 10
+
+### Data Types
+# Integer
+x = 5
+# Float
+x = 5.0
+# Boolean
+x = True
+# String
+x = "Hello, World!"
+
+## Operators
+# Arithmetic Operators
++, -, *, /, %, **
+# Comparison Operators
+==, !=, >, <, >=, <=
+# Logical Operators
+and, or, not
+
+## Control Structures
+
+### Conditional Statements
+# If statement
+if x > 5:
+    print("x is greater than 5")
+elif x == 5:
+    print("x is equal to 5")
+else:
+    print("x is less than 5")
+
+### Loops
+# For loop
+for i in range(0, 5):
+    print(i)
+# While loop
+i = 0
+while i < 5:
+    print(i)
+    i += 1
+
+## Functions
+# Defining a function
+def my_function(param1, param2):
+    print(param1 + param2)
+# Calling a function
+my_function(5, 10)
+
+## Lists
+# Declaring a list
+my_list = [1, 2, 3, 4, 5]
+# Accessing elements of a list
+my_list[0]  # returns 1
+my_list[-1] # returns 5
+# Slicing a list
+my_list[1:3] # returns [2, 3]
+# Appending to a list
+my_list.append(6)
+# Removing from a list
+my_list.remove(2)
+
+## Dictionaries
+# Declaring a dictionary
+my_dict = {"key1": "value1", "key2": "value2"}
+# Accessing elements of a dictionary
+my_dict["key1"]  # returns "value1"
+# Adding to a dictionary
+my_dict["key3"] = "value3"
+# Removing from a dictionary
+del my_dict["key2"]
+
+## Classes
+# Declaring a class
+class MyClass:
+    def __init__(self, param1, param2):
+        self.param1 = param1
+        self.param2 = param2
+    
+    def my_method(self):
+        print(self.param1 + self.param2)
+# Creating an instance of a class
+my_instance = MyClass(5, 10)
+# Calling a method of a class
+my_instance.my_method()
+
+## Exceptions
+# Catching an exception
+try:
+    # some code that may raise an exception
+except ExceptionType:
+    # do something to handle the exception
+# Raising an exception
+raise ExceptionType("Error message")
+