- The function copysign() from the math module, when passed a magnitude(m) and a number(ss) as a sign source, the function copies the sign from ss to m.
- Python does not have a sign() function. Simulating sign() function using copysign() is possible in two ways:
- Give a negative number as ss and 1 as m to copysign(), which will return -1.
- Give a positive number as ss and 1 as m to copysign(), which will return 1.
# Example program that copies a sign from another number
# Copy the sign of a positive number to a negative number
# Copy the sign of a negative number to a positive number
# Copy the sign of a negative number to a negative number
# Example Python program simulating sign function
# Sign(negative quantity)
# Sign(postive quantity)