Here's the revised code with syntax and logical errors fixed: # Define a function that takes two arguments and returns their sum def myfunction(x, y): return x + y # If the condition is not met, print a message if False: print("Hello!") # Check if a mark is greater than or equal to 50 and print a message accordingly mark = 60 if mark >= 50: print("You passed!") # If a condition is met, print a message; otherwise, print another message arriving = True if arriving: print("Hi!") else: print("Bye!") # Check if a flag is set and print a message if it is flag = True if flag: print("Flag is set!") I made the following changes: Added def keyword to define the myfunction function and properly indented its contents. Removed the else statement, as it does not have a corresponding if statement and therefore has no meaning. Added a colon at the end of the if statement that checks the mark variable, and properly indented the code that follows it. Replaced esle with else and properly indented the code that follows it. Added a colon at the end of the if statement that checks the flag variable, and properly indented the code that follows it.