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2015-01-26
  • What three things are required in a C-like language but omitted in Python?

  • How is a statement normally terminated in Python?

  • How are the statements in a nested block of code normally associated in Python?

  • How can you make a single statement span multiple lines?

  • How can you code a compound statement on a single line?

  • Is there any valid reason to type a semicolon at the end of a statement in Python?

  • What is a try statement for?

  • What is the most common coding mistake among Python beginners?




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2015-1-26 00:02:12
  • C-like languages require parentheses around the tests in some statements, semicolons at the end of each statement, and braces around a nested block of code.

  • The end of a line terminates the statement that appears on that line. Alternatively, if more than one statement appears on the same line, they can be terminated with semicolons; similarly, if a statement spans many lines, you must terminate it by closing a bracketed syntactic pair.

  • The statements in a nested block are all indented the same number of tabs or spaces.

  • You can make a statement span many lines by enclosing part of it in parentheses, square brackets, or curly braces; the statement ends when Python sees a line that contains the closing part of the pair.

  • The body of a compound statement can be moved to the header line after the colon, but only if the body consists of only noncompound statements.

  • Only when you need to squeeze more than one statement onto a single line of code. Even then, this only works if all the statements are noncompound, and it’s discouraged because it can lead to code that is difficult to read.

  • The try statement is used to catch and recover from exceptions (errors) in a Python script. It’s usually an alternative to manually checking for errors in your code.

  • Forgetting to type the colon character at the end of the header line in a compound statement is the most common beginner’s mistake. If you’re new to Python and haven’t made it yet, you probably will soon!



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