Python Programming: Student Number Format and Escape Sequences
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Questions and Answers

What is the purpose of the colon in string formatting?

  • To separate the placeholder from the parameter
  • To specify the width of the placeholder (correct)
  • To indicate the start of the format string
  • To specify the data type of the parameter

    • What is the default justification for strings in string formatting?

  • Centered
  • No default justification
  • Right justified
  • Left justified (correct)

    • How can decimal places be specified for floating point numbers in string formatting?

  • Using the `format()` method with a precision specifier (correct)
  • Using the `float()` function with a precision argument
  • Using the `round()` function
  • Using the `str.format()` method with a width specifier

    • What is the purpose of the title() method in the given code snippet?

    <p>To capitalize the first letter of each word in a string</p> Signup and view all the answers

    What is the purpose of the numbered/indexed placeholders in string formatting?

    <p>To specify the order of the parameters</p> Signup and view all the answers

    What is the effect of using the ^ character in string formatting?

    <p>Center justification</p> Signup and view all the answers

    What is the purpose of the len() function in Python?

    <p>To return the number of characters in a string</p> Signup and view all the answers

    How are strings indexed in Python?

    <p>From 0 to the length of the string minus 1</p> Signup and view all the answers

    What is the purpose of slicing in Python strings?

    <p>To retrieve a portion of a string</p> Signup and view all the answers

    What is the purpose of the upper() method in Python?

    <p>To convert a string to uppercase</p> Signup and view all the answers

    What is the purpose of the isalpha() method in Python?

    <p>To check if a string contains alpha characters only</p> Signup and view all the answers

    What is the purpose of the find() method in Python?

    <p>To find the index of a substring</p> Signup and view all the answers

    What is the purpose of the startswith() method in Python?

    <p>To check if a string starts with a substring</p> Signup and view all the answers

    How can you access individual characters in a string in Python?

    <p>Using square brackets []</p> Signup and view all the answers

    What is the purpose of the title() method in Python?

    <p>To capitalize the first letter of all words</p> Signup and view all the answers

    What is the purpose of negative indexing in Python strings?

    <p>To access characters from the end of the string</p> Signup and view all the answers

    What is the purpose of the {0:7.2f} in the code?

    <p>To display the answer to two decimal places</p> Signup and view all the answers

    What is the purpose of the format() function in the code?

    <p>To format a string with a variable</p> Signup and view all the answers

    What is the purpose of the input() function in the code?

    <p>To get input from the user</p> Signup and view all the answers

    What is the purpose of the float() function in the code?

    <p>To convert a string to a floating-point number</p> Signup and view all the answers

    What is the purpose of the int() function in the code?

    <p>To convert a string or a floating-point number to an integer</p> Signup and view all the answers

    What is the purpose of the abs() function in the code?

    <p>To return the absolute value of a number</p> Signup and view all the answers

    What is the purpose of the round() function in the code?

    <p>To return a number rounded to a specified number of decimals</p> Signup and view all the answers

    What is the purpose of the math.hypot() function in the code?

    <p>To return the length of the hypotenuse of a right-angled triangle</p> Signup and view all the answers

    What is the purpose of the math.sqrt() function in the code?

    <p>To return the square root of a number</p> Signup and view all the answers

    What is the purpose of the max() function in the code?

    <p>To return the maximum of a set of numbers</p> Signup and view all the answers

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