PCEP-30-02 1.1 Understand Fundamental Terms and Definitions PCEP-30 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which of the following is an example of a lexical element in Python?

   • AThe meaning of the '+' operator when applied to strings.
   • BThe keyword 'def' used to define a function.
   • CThe rule that an 'if' statement must be followed by a colon.
   • DThe process of converting source code to bytecode.
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2. 2expert · medium

   A developer writes the following code snippet: ```python if True print('Hello') ``` The interpreter raises an IndentationError. What does this error indicate about the code?

   • AThe code violates Python's syntax rules because the `if` statement is missing a colon, and the indentation is not recognized as a block.
   • BThe code is semantically incorrect because `True` is not a valid condition.
   • CThe error is a runtime error because `print` is not defined in this context.
   • DThe code is syntactically correct but the interpreter cannot understand the indentation because it is not consistent with the rest of the file.
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4. 3expert · hard

   A developer modifies a Python module that is imported by several other modules. After the change, they run the main script, but the old behavior persists. What is the most likely cause?

   • AThe interpreter is using a cached .pyc file because the source file's timestamp has not changed.
   • BThe interpreter ignores changes to imported modules by design; only the main script is recompiled.
   • CThe interpreter caches the module in memory and does not reload it unless the process is restarted.
   • DThe interpreter compiles all modules to machine code at startup, so changes require a full system reboot.
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5. 4application · medium

   A student is learning Python and encounters the line `for i in range(3):`. They ask which parts are keywords. Which answer correctly identifies the keywords in this line?

   • A`i` and `3` are keywords because they are the variable and the literal.
   • B`for` and `in` are keywords; `i`, `range`, and `3` are not keywords.
   • C`for`, `in`, and `range` are keywords because they are part of the loop syntax.
   • DAll words in the line are keywords because they are all part of the statement.
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6. 5foundation · easy

   Which of the following best defines 'lexis' in the context of programming languages?

   • AThe meaning or effect of a program when it is executed.
   • BThe process of translating source code into machine code.
   • CThe set of basic vocabulary elements, such as keywords, identifiers, literals, and operators.
   • DThe set of rules that determine the structure of valid statements.
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