10 examples of 'how to extract digits from a number in python' in Python

84
def _check_digit(number):
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    """Calculate a single check digit on the provided part of the number."""
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    weights = (13, 15, 12, 5, 4, 17, 9, 21, 3, 7, 1)
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    s = sum(w * (int(n) if n.isdigit() else alphabet.find(n) + 1)
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            for w, n in zip(weights, number))
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    return 'MQWERTYUIOPASDFGHJKLBZX'[s % 23]

32
def digits(s):
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    if not s:
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        return ''
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    if type(s) is int:
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        return s
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    return re.sub('[^0-9]', '', s)

45
def sum_digits(num):
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    return sum(map(int, list(str(num))))

156
def get_numbers(num):
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    card_and_port = str(num)
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    card_and_port = re.split('/|-',card_and_port)
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    card = card_and_port[0]
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    fromPort = card_and_port[1]
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    toPort = fromPort if len(card_and_port) <= 2 else card_and_port[2]
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    return card, fromPort, toPort

71
def calc_check_digit(number):
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    """Calculate the check digit. The number passed should have the check
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    digit included."""
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    checksum = (1 - 2 * int(number[:-1], 13)) % 11
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    return 'X' if checksum == 10 else str(checksum)

54
def calc_check_digit(number):
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    """Calculate the check digit for personal codes. The number passed
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    should not have the check digit included."""
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    # note that this algorithm has not been confirmed by an independent source
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    weights = (2, 7, 9, 1, 4, 6, 3, 5, 8, 2, 7, 9)
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    check = sum(w * int(n) for w, n in zip(weights, number)) % 11
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    return '1' if check == 10 else str(check)

110
def calc_check_digit(number):
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    """Calculate the extra digit that should be appended to the number to
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    make it a valid number."""
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    return str(_multiplication_table[checksum(str(number) + '0')].index(0))

9
def find_nth_digit(n):
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    len = 1
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    count = 9
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    start = 1
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    while n > len * count:
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        n -= len * count
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        len += 1
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        count *= 10
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        start *= 10
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    start += (n - 1) / len
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    s = str(start)
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    return int(s[(n - 1) % len])

20
def ParseNumber(number):
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    if number.startswith('0x'):
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        return int(number[2:], 16)
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    else:
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        return int(number)

48
def calc_check_digit(number):
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    """Calculate the check digit. The number passed should not have the
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    check digit included."""
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    weights = (21, 19, 17, 13, 11, 9, 7, 3, 1)
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    return str(sum(w * int(n) for w, n in zip(weights, number)) % 10)