python3 中的属性错误

Question

我想调整 this code 以使用波斯语文本。

我更改了它，在下面的代码中可以看到，其中更改了 english_frequency 和 ordA。但是，它有一个错误 uppercase 行：

cleaned = [ord(c) for c in input.upper() if c.isupper()].

你能帮我改编一下吗？

from string import ascii_uppercase
from operator import itemgetter

def vigenere_decrypt(target_freqs, input):
nchars = len(ascii_uppercase)
ordA = ord('ا')
sorted_targets = sorted(target_freqs)

def frequency(input):
    result = [[c, 0.0] for c in ascii_uppercase]
    for c in input:
        result[c - ordA][1] += 1
    return result

def correlation(input):
    result = 0.0
    freq = frequency(input)
    freq.sort(key=itemgetter(1))

    for i, f in enumerate(freq):
        result += f[1] * sorted_targets[i]
    return result

cleaned = [ord(c) for c in input.upper() if c.isupper()]
best_len = 0
best_corr = -100.0

# Assume that if there are less than 20 characters
# per column, the key's too long to guess
for i in xrange(2, len(cleaned) // 20):
    pieces = [[] for _ in xrange(i)]
    for j, c in enumerate(cleaned):
        pieces[j % i].append(c)

    # The correlation seems to increase for smaller
    # pieces/longer keys, so weigh against them a little
    corr = -0.5 * i + sum(correlation(p) for p in pieces)

    if corr > best_corr:
        best_len = i
        best_corr = corr

if best_len == 0:
    return ("Text is too short to analyze", "")

pieces = [[] for _ in xrange(best_len)]
for i, c in enumerate(cleaned):
    pieces[i % best_len].append(c)

freqs = [frequency(p) for p in pieces]

key = ""
for fr in freqs:
    fr.sort(key=itemgetter(1), reverse=True)

    m = 0
    max_corr = 0.0
    for j in xrange(nchars):
        corr = 0.0
        c = ordA + j
        for frc in fr:
            d = (ord(frc[0]) - c + nchars) % nchars
            corr += frc[1] * target_freqs[d]

        if corr > max_corr:
            m = j
            max_corr = corr

    key += chr(m + ordA)

r = (chr((c - ord(key[i % best_len]) + nchars) % nchars + ordA)
     for i, c in enumerate(cleaned))
return (key, "".join(r))


def main():
encoded = "بفعاع پهيتش غعهدد ذصلدي هزفضر کنهرظ ضذکاح يصتمد فهزگع " 
english_frequences = [
    14, 4.2, 0.7, 5.2, 0.1, 1.2, 0.4,
    1, 1.4, 7.5, 0.1, 8.5, 2.1, 0.1,
    3.3, 2.6, 0.7, 0.3, 0.6, 0.2, 1.5,
    0.2, 1.6, 1.2, 3, 1.7, 2.7, 5.7, 7.1, 6, 5.7, 9.1]

(key, decoded) = vigenere_decrypt(english_frequences, encoded)
print ("Key:", key)
print ("\nText:", decoded)

main()

Answer 1

这显然是 python 2 代码，而您运行它使用的是 python 3 解释器。

使用Python 2.

此外，与 the original 相比，您破坏了许多块的缩进。

python3 中的属性错误

AttributeError in python3

python

attributeerror