48. isDigit

Task

Determine if the given character is a digit or not.

Example

• For symbol = '0', the output should be
  isDigit(symbol) = true;

• For symbol = '-', the output should be
  isDigit(symbol) = false.

Input/Output

• [execution time limit]
  4 seconds (py3)

• [input] char symbol
  A character which is either a digit or not.

• [output] boolean
  true if symbol is a digit, false otherwise.

My Solution

def isDigit(symbol):
    return symbol.isdigit()