cmath.pi The mathematical constant π, as a float.

random.vonmisesvariate(mu, kappa) mu is the mean angle, expressed in radians between 0 and 2*pi, and kappa

min(x, y) Compares two values numerically and returns the minimum.

real Abstract. Retrieves the real component of this number.

is_snan() Return

adjusted() Return the adjusted exponent after shifting out the coefficient’s rightmost digits until only the lead digit remains:

cmath.isnan(x) Return True if either the real or the imaginary part of x is a NaN, and False

class decimal.InvalidOperation An invalid operation was performed. Indicates that an operation

divide(x, y) Return x divided by y.

math.nan A floating-point “not a number” (NaN) value. Equivalent to the output of float('nan').