零. 常见
1 | TypeError: 'range' object doesn't support item deletion |
- 注：3.x中range()要改为list(rang())，因为python3中range不返回数组对象，而是返回range对象
1 | AttributeError: 'dict' object has no attribute 'iteritems' |
- iteritems()要改为items()
二. kNN
报错：
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NameError: name 'reload' is not defined
在前面加入命令(个人推荐直接写在mian函数里面简单快捷)
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from imp import reload
四. 朴素贝叶斯
报错：
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UnicodeDecodeError: 'gbk' codec can't decode byte 0xae in position 199: illegal multibyte sequence
那是因为书上的下面这两行代码有点问题：
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7wordList = textParse(open('email/spam/%d.txt' % i).read()
wordList = textParse(open('email/ham/%d.txt' % i).read()
需要将上面的代码更为下面这两行：
wordList = textParse(open('email/spam/%d.txt' % i, "rb").read().decode('GBK','ignore') )
wordList = textParse(open('email/ham/%d.txt' % i, "rb").read().decode('GBK','ignore') )
因为有可能文件中存在类似“�”非法字符。报错：
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TypeError: 'range' object doesn't support item deletion
1 | AttributeError: 'dict' object has no attribute 'iteritems' |
- 参考常见错误
五. Logistic回归
- 报错：
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TypeError: 'numpy.float64' object cannot be interpreted as an integer
这里是因为numpy版本问题，更改版本解决 1
pip install -U numpy==1.11.0
报错：
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TypeError: 'range' object doesn't support item deletion
参考常见错误
报错：
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AttributeError: 'numpy.ndarray' object has no attribute 'getA'
注释掉plotBestFit()的矩阵转为数组，因为在输入时已经转换为数组了
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5plotBestFit(weights)
'''
# 矩阵变为数组,使用gradAscent时加入
weights = wei.getA()
'''