Python Language Basics, IPython, and Jupyter Notebooks
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Questions
According to the chapter, how does the Python interpreter execute a program?
View answer and explanationWhat is the primary method described for running a Python script named 'hello_world.py' from the command line?
View answer and explanationWhat is the file extension of a self-contained Jupyter notebook file?
View answer and explanationIn IPython, how can you access general information about an object, such as a variable 'b', including its type and docstring?
View answer and explanationWhat is the purpose of using whitespace (tabs or spaces) in Python, as described in the section on Language Semantics?
View answer and explanationWhat happens when you execute 'a.append(4)' where 'a' is a list and 'b = a' has been previously executed?
View answer and explanationWhat is the defining characteristic of a 'strongly typed' language like Python, according to the chapter?
View answer and explanationWhich of the following data types is described as immutable in Python?
View answer and explanationWhat is the result of integer division for the expression '3 / 2' in modern Python?
View answer and explanationHow do you create a multiline string in Python?
View answer and explanationWhat is the purpose of the 'r' prefix before a string literal, for example, r'this\has\no\special\characters'?
View answer and explanationWhich method should be used to convert a Unicode string into its UTF-8 bytes representation?
View answer and explanationIn Python, what is the numerical value of 'True' when it is converted to an integer?
View answer and explanationWhat is the Python keyword for the null value type?
View answer and explanationWhat does the 'strftime' method of a datetime object do?
View answer and explanationWhat is the result type when you subtract one datetime object from another, such as 'dt2 - dt'?
View answer and explanationIn a Python 'if/elif/else' structure, what happens when a compound condition like 'if a < b or c > d:' is evaluated and the first part ('a < b') is True?
View answer and explanationWhat is the purpose of the 'continue' keyword within a for loop?
View answer and explanationWhat is the primary function of the 'pass' statement in Python?
View answer and explanationThe 'range' function generates a sequence of evenly spaced integers. What does the output of 'range(10)' represent?
View answer and explanationWhat is the output of the code `list(range(0, 20, 2))`?
View answer and explanationWhat result does the expression `4 > 3 > 2 > 1` produce in Python?
View answer and explanationWhich of the following books is recommended in the chapter to deepen one's knowledge of the Python language?
View answer and explanationIn the context of IPython, what does the term 'object introspection' refer to?
View answer and explanationWhat is the purpose of the wildcard search `np.*load*?` in IPython?
View answer and explanationWhat does the concept 'everything is an object' mean in Python's object model?
View answer and explanationWhat is the term for functions that are attached to an object and have access to its internal contents?
View answer and explanationThe term 'binding' in Python is used as another name for what action?
View answer and explanationWhat is the purpose of the `isinstance` function?
View answer and explanationWhat is the concept of 'duck typing'?
View answer and explanationHow can you give an imported module a different variable name in your code?
View answer and explanationWhat is the difference between the `is` operator and the `==` operator when comparing two variables `a` and `c`?
View answer and explanationWhat is the recommended way to handle potential side effects when writing a function?
View answer and explanationWhich of the following is NOT one of the standard Python scalar types listed in Table 2-2?
View answer and explanationWhat is the result of applying the `str()` function to the float `5.6`?
View answer and explanationIn the string format method, what does the specifier `{0:.2f}` mean?
View answer and explanationWhich string formatting feature was introduced in Python 3.6 to make creating formatted strings more convenient?
View answer and explanationWhat will `bool(0)` evaluate to?
View answer and explanationIn the example `dt.replace(minute=0, second=0)`, where `dt` is a datetime object, is the original `dt` object modified?
View answer and explanationHow many lines of text does the string `c` contain in the following code? `c = """ This is a longer string that spans multiple lines """`
View answer and explanationWhat is slicing in Python?
View answer and explanationWhat does the code `s = '12\\34'; print(s)` output?
View answer and explanationWhat are the two Boolean values in Python?
View answer and explanationWhat is a common default value for function arguments in Python, as shown in the `add_and_maybe_multiply` example?
View answer and explanationWhat are the three main types provided by the built-in Python `datetime` module mentioned in the text?
View answer and explanationWhat is the output of the following code? `sequence = [1, 2, 0, 4, 6, 5, 2, 1]; total_until_5 = 0; for value in sequence: if value == 5: break; total_until_5 += value;` What is the final value of `total_until_5`?
View answer and explanationWhat does the code `for i in range(4): for j in range(4): if j > i: break; print((i, j))` produce?
View answer and explanationWhat is the behavior of a `while` loop in Python?
View answer and explanationWhat is the common use of the `range` function when iterating through sequences, as demonstrated in the text?
View answer and explanationA user wants to sum all numbers from 0 to 99,999 that are multiples of 3 or 5. What is the memory-usage advantage of using `range(100_000)` in a for loop for this task, as mentioned in the text?
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