def isAllNumbers(aStr):
    aStr = aStr.strip()
    if (len(aStr) == countTruth(lambda x: x >= '0' and x <= '9', aStr)):
        return True
    else:
        return False
Returns True if `aStr` consists of all numbers
dataset/ETHPy150Open dssg/ushine-learning/dssg/util.py/isAllNumbers