Errors found in the `basic_datatypes` notebook

[despadam]

• [x] Add import math in solution_circle_area() in basic_datatypes and explain that pi is defined there
• [x] It is not clear that quadratic equation expects two results
• [x] solution_number_is_lower_than_0_or_greater_than_100 in the test we check for >=
• [x] in comparison operators, explain the difference of == and isequal with the float number problem and how is it repsresented in bits

[yakutovicha]

in the def solution_number_is_even(number: float) -> bool: the input types do not match. It should be number:int

[baffelli]

https://docs.python.org/3/library/decimal.html

[baffelli]

In the exercise solution_return_first_and_last_element_from_list, the annotated return type is list[float] however the solution checks for a tuple[float, float]. We should make this consistent

[baffelli]

popitem does not remove an arbitrary element but the last element inserted into a dict.

[yakutovicha]

For the record: it takes roughly 3 hours to finish the basic datatypes section, so we might want to give students a bit more time for the next tutorial.

[despadam]

From #233: In the basic datatypes notebook, trying to convert a complex number to float raises a TypeError as expected. However, it doesn't print the error to the console unless it is surrounded by a try...except statement.