<human>:  logaritthms.
<bot>: Here is a Python function to logaritthms

import math

def log(x):
  """
  Returns the log of x
  """
  return math.log(x)

# Enter the number
number = 100

# Calling the function
print((log(number)))

#Example Output
# 4.605170185988092

#Remember to inspect code for bugs.