A keyword in Python is a reserved word that has a special meaning and purpose in the language. These keywords cannot be used as variable names or any other identifiers in the program. Some examples of keywords in Python are:

• if: Used to define a conditional statement.
• for: Used to create a loop that iterates over a sequence.
• while: Used to create a loop that continues until a certain condition is met.
• def: Used to define a function.
• class: Used to define a class.
• return: Used to specify the value that a function should return.
• import: Used to import modules or libraries into a program.
• try: Used to define a block of code that may raise an exception.
• except: Used to define a block of code that is executed if an exception is raised.
• finally: Used to define a block of code that is always executed, regardless of whether an exception is raised or not.
• global: Used to declare a global variable inside a function.
• pass: Used as a placeholder when no action is required in a block of code.
• and, or, not: Used as logical operators in conditional statements.
• in, is: Used as membership and identity operators, respectively.

These are just a few examples of keywords in Python. There are more keywords in the language that serve different purposes.