input: def check_number(num):
      """Improve the following Python code to check if a number is in the range of 1 to 10 (inclusive).
      >>> check_number(5)
      True
      >>> check_number(10)
      True
      >>> check_number(0)
      False
      >>> check_number(11)
      False
      """
      if (num >= 1 and num <= 10):
          return True
      else:
          return False
output:     return 1 <= num <= 10