Numbers: int, float, bool, complex

What does this print? ``` print(5 & 3) print(5 | 2) print(5 ^ 1) ```

What does this print? ``` print(~9) ```

What does this print? ``` print(1 << 4) print(20 >> 2) ```

What does this print? ``` c = 3 + 4j print(c.real, c.imag) print(type(c.real)) ```

What does this print? ``` a = 1 + 2j b = 1 + 3j print(a == b) print(a < b) ```

What does this print? ``` print(6 / 2) print(7 // 2) ```

What does this print? ``` print(-7 // 2) ```

What does this print? ``` print(-7 % 3) print(7 % -3) ```

What does this print? ``` print(2 ** 3 ** 2) ```

Does Python's int overflow for very large values like a 64-bit C int does?

What does this print? ``` print(0.1 + 0.2 == 0.3) ```

How do you get a float with the value infinity, given that inf is not a usable constant?

What does this print? ``` nan = float("nan") print(nan == nan) ```

What does this print? ``` print(True + True) print(isinstance(True, int)) ```

What does this print? ``` print(0 or "hello") print("a" and "b") ```

What does this print? ``` x = True if x or print("side"): print("done") ```

Are these two empty-check expressions equivalent for a list? ``` if len(items) > 0: ... if items: ... ```

What does this print? ``` x = 5 print(1 < x < 10) print(10 < x < 20) ```

What does this print? ``` print(0xFF) print(0o17) print(0b1010) ```

What does this print? ``` print(int("ff", 16)) print(int("54425", 6)) ```

In the augmented assignment x += y, what may x and y each be, and what does it expand to?

What does this print, or does it fail? print(int(33.9)) print(int(1 + 2j))

Since Python 3.6, what do underscores do in a numeric literal like 1_000_000 or 3.000_000_1?

What does (37).bit_length() return, and why are the parentheses around 37 needed?

Does Python's built-in float offer a single-precision (32-bit) option?

What does this print? print(1.5e3) print(2E-3)

Which of these are valid float literals: -3., .001, 3,14?

What does this print? print(1987 == 1987.0) print(1234 == "1234")

How can you check whether a float holds a whole-number value (e.g. tell 5.0 apart from 5.5)?

Are Python's numeric types (int, float, bool, complex) mutable or immutable, and what follows from that for x += 1?

Does Python have ++ and -- increment/decrement operators like C? What do you use instead?

What does this print? print(abs(-12.34)) print(abs(3 + 4j))

Python has and and or as logical operators — is there also a logical xor?

What does this print, or does it fail? print(complex(1, 3)) print(complex("3+4j")) print(complex("3 + 4j"))

What does float() (no argument) return, and can you call float(3 + 4j)?

What is the advantage of pow(x, y, z) over writing x ** y % z?

What does this print? print(round(2.5)) print(round(3.14159, 2))

Why does math.sqrt(-1) fail, and which module handles complex numbers?

What does this print, and why? from decimal import Decimal print(Decimal(0.7) == 0.7) print(Decimal("0.7") == 0.7)