Python Real & Complex Numbers Interactive Explorer

1. Complex Number & Argand Plane z = a + bj

Real Component (z.real): 3.14159

Imaginary Component (z.imag): 2.71828

Drag or click anywhere on plane to steer z

Complex Repr 3.14159 + 2.71828j

z.real attribute 3.14159

z.imag attribute 2.71828j

abs(z) magnitude 4.1544

cmath.phase(z) 0.7130 rad

z.conjugate() 3.14159 - 2.71828j

# Python Interactive REPL
z = complex(3.14159, 2.71828)
print(z.real)         # 3.14159
print(z.imag)         # 2.71828
print(isinstance(z.real, float))  # True

2. Float Precision & Formatting IEEE-754 / % / f-string

In Python, floating point real numbers have finite 64-bit precision. Select how you format z.real:

Formatted Output: 3.14

3. Pythonic Idiom Comparator Zen of Python

Un-Pythonic Pattern Avoid

i = 0
for item in lines:
    print(i, item)
    i += 1

Pythonic Pattern Recommended

for i, item in enumerate(lines):
    print(i, item)

Idiom Simulated Output:

0: line_one
1: line_two