1 syntax error

[cclauss]

flake8 testing of https://github.com/apachecn/AiLearning on Python 3.7.0

$ flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

./src/py3.x/dl/perceptron.py:192:22: F821 undefined name 'train_and_perceptron'
    and_perceptron = train_and_perceptron()
                     ^
./src/py3.x/16.RecommenderSystems/test_基于用户.py:74:28: F821 undefined name 'u'
    for v, wuv in sorted(W[u].items, key=itemgetter(1), reverse=True)[0:K]:
                           ^
./src/py3.x/16.RecommenderSystems/test_基于用户.py:74:73: F821 undefined name 'K'
    for v, wuv in sorted(W[u].items, key=itemgetter(1), reverse=True)[0:K]:
                                                                        ^
./src/py3.x/16.RecommenderSystems/test_lfm.py:12:16: F821 undefined name 'items_pool'
        item = items_pool[random.randint(0, len(items_pool) - 1)]
               ^
./src/py3.x/16.RecommenderSystems/test_lfm.py:12:49: F821 undefined name 'items_pool'
        item = items_pool[random.randint(0, len(items_pool) - 1)]
                                                ^
./src/py3.x/16.RecommenderSystems/test_lfm.py:23:14: F821 undefined name 'InitModel'
    [P, Q] = InitModel(user_items, F)
             ^
./src/py3.x/16.RecommenderSystems/test_lfm.py:26:23: F821 undefined name 'RandSelectNegativeSamples'
            samples = RandSelectNegativeSamples(items)
                      ^
./src/py3.x/16.RecommenderSystems/test_lfm.py:28:29: F821 undefined name 'Predict'
                eui = rui - Predict(user, item)
                            ^
./src/py3.x/16.RecommenderSystems/test_基于物品.py:10:18: F821 undefined name 'users'
        for i in users:
                 ^
./src/py3.x/16.RecommenderSystems/test_基于物品.py:12:22: F821 undefined name 'users'
            for j in users:
                     ^
./src/py3.x/16.RecommenderSystems/test_基于物品.py:21:18: F821 undefined name 'v'
            W[u][v] = cij / math.sqrt(N[i] * N[j])
                 ^
./src/py3.x/16.RecommenderSystems/test_基于物品.py:30:18: F821 undefined name 'users'
        for i in users:
                 ^
./src/py3.x/16.RecommenderSystems/test_基于物品.py:32:22: F821 undefined name 'users'
            for j in users:
                     ^
./src/py3.x/16.RecommenderSystems/test_基于物品.py:41:18: F821 undefined name 'v'
            W[u][v] = cij / math.sqrt(N[i] * N[j])
                 ^
./src/py3.x/16.RecommenderSystems/test_evaluation_model.py:22:16: F821 undefined name 'GetRecommendation'
        rank = GetRecommendation(user, N)
               ^
./src/py3.x/16.RecommenderSystems/test_evaluation_model.py:36:16: F821 undefined name 'GetRecommendation'
        rank = GetRecommendation(user, N)
               ^
./src/py3.x/16.RecommenderSystems/test_evaluation_model.py:51:16: F821 undefined name 'GetRecommendation'
        rank = GetRecommendation(user, N)
               ^
./src/py3.x/16.RecommenderSystems/test_evaluation_model.py:68:16: F821 undefined name 'GetRecommendation'
        rank = GetRecommendation(user, N)
               ^
./src/py3.x/nlp/6.LDA/demo.py:13:14: F821 undefined name 'corpora'
dictionary = corpora.Dictionary(train)
             ^
./src/py2.x/dl/perceptron.py:62:68: E999 SyntaxError: invalid syntax
        return self.activator(reduce(lambda a, b: a + b,map(lambda (x, w): x * w, zip(input_vec, self.weights)), 0.0) + self.bias)
                                                                   ^
1     E999 SyntaxError: invalid syntax
19    F821 undefined name 'GetRecommendation'
20

[jiangzhonglian]

老哥，有心了，谢谢帮忙规范代码

[cclauss]

OK... This last one is a bit tougher...
https://github.com/apachecn/AiLearning/blob/dev/src/py2.x/dl/perceptron.py#L62

Python 2:

• lambda x, w: x # OK
• lambda (x, w): x # OK

Python 3:

• lambda x, w: x # OK
• lambda (x, w): x # Syntax Error!

[jiangzhonglian]

@chenyyx 瑶妹，看看这个问题

[chenyyx]

@jiangzhonglian ok，我看一下哈