Writing & Running a Program

What does this print? ``` print("a") # print("b") print("c") ```

Is a triple-quoted string like """ ... """ on its own a real multi-line comment in Python?

What's the difference between a statement and an expression in Python?

What does this print? ``` x = True if x: print("Hello World") ```

What does this print, and what's the trap? ``` x = False if x: print("Hi"); print("Bye") ```

What does this print? ``` var = ( 10 + 10 ) print(var) ```

Outside of brackets, how do you continue a single statement onto the next physical line, and what's the catch?

When you read a Python traceback's location, why might the line it points to not be where you actually made the mistake?

On Linux/macOS, what does the shebang line #!/usr/bin/env python do, and why is it preferred over #!/usr/bin/python?

What does this print? ``` if True: print("hi") ```

In Python, how is a statement body (block) tied to its header like if x > 10:?

Why is mixing tabs and spaces for indentation in the same block dangerous, even when the code looks correctly aligned?

What does this print? ``` if attempt < secret print("Too small") ```

When you run python program.py, does Python skip compilation and execute the source line by line (like a shell script)?

A Python developer expects program.pyc to be a standalone executable like a compiled C binary. Why is that wrong?

What does this evaluate to? ``` s = "Hello " \ "World" print(s) ```

In the guessing game, why is attempt = int(input("Guess: ")) wrong without the int(...), given the loop while attempt != secret and integer secret?

Are Otto and otto the same variable in Python? Can an identifier start with a digit or contain accented letters like é?

Why does class = 5 raise a SyntaxError in Python?

Python byte code is portable across platforms. So why does an equivalent C program usually run faster?

Your code looks aligned in your editor but Python rejects it after you mixed tabs and spaces. What does Python 3 do with inconsistently mixed tabs and spaces?

When Python prints an error message, what do its three parts tell you?

A colleague's Python error output doesn't match the wording in your textbook, even for the same bug. What changed?

You put #!/usr/bin/env python at the top of prog.py, but ./prog.py still won't run on Linux. What's missing, and would this line even matter on Windows?