math.copysign(x, y) Return a float with the magnitude (absolute value) of x but the sign of y. On platforms

cmath.isfinite(x) Return True if both the real and imaginary parts of x are finite, and False

math.acos(x) Return the arc cosine of x, in radians.

class numbers.Number The root of the numeric hierarchy. If you just want to check if an argument x is a number, without

min_mag(x, y) Compares the values numerically with their sign ignored.

cmath.atan(x) Return the arc tangent of x. There are two branch cuts: One extends from 1j along the imaginary

compare_signal(x, y) Compares the values of the two operands numerically.

random.weibullvariate(alpha, beta) Weibull distribution. alpha is the scale parameter and beta is the shape

class decimal.DecimalException Base class for other signals and a subclass of

log10(x) Returns the base 10 logarithm of x.