机器学习实战——决策树Python实现问题记录

其他 2018-10-20 17:00:54 阅读次数: 0

问题：NameError: name 'reload' is not defined

import imp
import trees
imp.reload(trees)

结论：已经导入过的模块才能用reload, reload的参数应该是模块名，而不是文件名。在pyhton3.x中要先导入文件和imp模块，才能用imp.reload()

问题：关于Plot图像不显示中文文字问题

原因是标题默认输出英文，如果输出中文，要对字体进行调整。需要在程序定义前输入：

plt.rcParams['font.sans-serif']=['SimHei']
plt.rcParams['axes.unicode_minus'] = False

问题：TypeError: ‘dict_keys’ object does not support indexing

这个问题是python版本的问题

#如果使用的是python2
firstStr = myTree.keys()[0]
#LZ使用的是python3
firstSides = list(myTree.keys())
firstStr = firstSides[0]

解决办法就是先转换成list，再把需要的索引提取出来。

问题：Python3文件读写错误 TypeError: write() argument must be str, not bytes

Traceback (most recent call last):
  File "<pyshell#121>", line 1, in <module>
    trees.storeTree(myTree,'classifierStorage.txt')
  File "C:\Users\34856\Desktop\trees.py", line 97, in storeTree
    pickle.dump(inputTree,fw)
TypeError: write() argument must be str, not bytes

解决方法：

fw = open(filename, 'w')


改为

fw = open(filename, 'wb')

完整代码如下
 


# 在磁盘上存储 决策树对象  用于节省时间
def storeTree(inputTree, filename):
    import pickle
    fw = open(filename, 'wb')
    pickle.dump(inputTree, fw)
    fw.close()

继续运行

出现错误：UnicodeDecodeError: 'gbk' codec can't decode byte 0x80 in position 0: illegal multibyte sequence

Traceback (most recent call last):
  File "<pyshell#126>", line 1, in <module>
    trees.grabTree('classifierStorage.txt')
  File "C:\Users\34856\Desktop\trees.py", line 103, in grabTree
    return pickle.load(fr)
UnicodeDecodeError: 'gbk' codec can't decode byte 0x80 in position 0: illegal multibyte sequence

解决方法：

fr = open(filename)


改为

fr = open(filename, 'rb')

完整代码：

# 加载存储在磁盘上的 决策树

def grabTree(filename):

import pickle

fr = open(filename, 'rb')

return pickle.load(fr)

问题：AttributeError: 'dict' object has no attribute 'iteritems'

Python3.x中：iteritems变为items

附录：

Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 17:00:18) [MSC v.1900 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import treePlotter
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    import treePlotter
ModuleNotFoundError: No module named 'treePlotter'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
Traceback (most recent call last):
  File "<pyshell#2>", line 1, in <module>
    treePlotter.createPlot()
  File "C:\Users\34856\Desktop\treePlotter.py", line 16, in createPlot
    createPlot.ax1 = plt.subplot(111,frmaeon = Flase)
NameError: name 'Flase' is not defined
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    treePlotter.createPlot()
  File "C:\Users\34856\Desktop\treePlotter.py", line 16, in createPlot
    createPlot.ax1 = plt.subplot(111,frmaeon = False)
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\pyplot.py", line 1103, in subplot
    a = fig.add_subplot(*args, **kwargs)
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\figure.py", line 1370, in add_subplot
    a = subplot_class_factory(projection_class)(self, *args, **kwargs)
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\axes\_subplots.py", line 70, in __init__
    self._axes_class.__init__(self, fig, self.figbox, **kwargs)
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\axes\_base.py", line 498, in __init__
    self.update(kwargs)
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\artist.py", line 916, in update
    ret = [_update_property(self, k, v) for k, v in props.items()]
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\artist.py", line 916, in <listcomp>
    ret = [_update_property(self, k, v) for k, v in props.items()]
  File "C:\Users\34856\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\artist.py", line 912, in _update_property
    raise AttributeError('Unknown property %s' % k)
AttributeError: Unknown property frmaeon
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()

=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
>>> treePlotter.createPlot()

=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()

=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.createPlot()
>>> import imp
>>> imp.reload(treePlotter)
<module 'treePlotter' from 'C:\\Users\\34856\\Desktop\\treePlotter.py'>
>>> treePlotterr.retrieveTree(1)
Traceback (most recent call last):
  File "<pyshell#24>", line 1, in <module>
    treePlotterr.retrieveTree(1)
NameError: name 'treePlotterr' is not defined
>>> treePlotter.retrieveTree(1)
Traceback (most recent call last):
  File "<pyshell#25>", line 1, in <module>
    treePlotter.retrieveTree(1)
AttributeError: module 'treePlotter' has no attribute 'retrieveTree'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> treePlotter.retrieveTree(1)
{'no surfacing': {0: 'no', 1: {'flippers': {0: {'head': {0: 'no', 1: 'yes'}}, 1: 'no'}}}}
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.getNumLeafs(myTree)
Traceback (most recent call last):
  File "<pyshell#29>", line 1, in <module>
    treePlotter.getNumLeafs(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 26, in getNumLeafs
    firstStr = myTree.keys()[0]
TypeError: 'dict_keys' object does not support indexing
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> mport treePlotter
SyntaxError: invalid syntax
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.getNumLeafs(myTree)
3
>>> treePlotter.getTreeDepth(myTree)
Traceback (most recent call last):
  File "<pyshell#34>", line 1, in <module>
    treePlotter.getTreeDepth(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 37, in getTreeDepth
    firstStr = myTree.keys()[0]
TypeError: 'dict_keys' object does not support indexing
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.getNumLeafs(myTree)
3
>>> treePlotter.getTreeDepth(myTree)
2
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree =treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#41>", line 1, in <module>
    treePlotter.createPlot(myTree)
TypeError: createPlot() takes 0 positional arguments but 1 was given
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> firstSides = list(myTree.keys())
    firstStr = firstSides[0]
    
SyntaxError: multiple statements found while compiling a single statement
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#45>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 86, in createPlot
    plotTree.totalD = float(getTreeDepth(inThree))
NameError: name 'inThree' is not defined
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#48>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 88, in createPlot
    plotTree(inTree,(0.5,1.0),'')
  File "C:\Users\34856\Desktop\treePlotter.py", line 66, in plotTree
    plotMidText(cntrPt,parenPt,nodeTxt)
NameError: name 'parenPt' is not defined
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#51>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 88, in createPlot
    plotTree(inTree,(0.5,1.0),'')
  File "C:\Users\34856\Desktop\treePlotter.py", line 66, in plotTree
    plotMidText(cntrPt,parentPt,nodeTxt)
  File "C:\Users\34856\Desktop\treePlotter.py", line 57, in plotMidText
    createPlot.ax1.test(xMid,yMid,txtString)
AttributeError: 'function' object has no attribute 'ax1'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#54>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 88, in createPlot
    plotTree(inTree,(0.5,1.0),'')
  File "C:\Users\34856\Desktop\treePlotter.py", line 66, in plotTree
    plotMidText(cntrPt,parentPt,nodeTxt)
  File "C:\Users\34856\Desktop\treePlotter.py", line 57, in plotMidText
    createPlot.ax1.text(xMid,yMid,txtString)
AttributeError: 'function' object has no attribute 'ax1'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#57>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 88, in createPlot
    plotTree(inTree,(0.5,1.0),'')
  File "C:\Users\34856\Desktop\treePlotter.py", line 66, in plotTree
    plotMidText(cntrPt,parentPt,nodeTxt)
  File "C:\Users\34856\Desktop\treePlotter.py", line 57, in plotMidText
    createPlot.ax1.text(xMid,yMid,txtString)
AttributeError: 'function' object has no attribute 'ax1'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#60>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 88, in createPlot
    plotTree(inTree,(0.5,1.0),'')
  File "C:\Users\34856\Desktop\treePlotter.py", line 66, in plotTree
    plotMidText(cntrPt,parentPt,nodeTxt)
  File "C:\Users\34856\Desktop\treePlotter.py", line 57, in plotMidText
    createPlot.ax1.text(xMid,yMid,txtString)
AttributeError: 'function' object has no attribute 'ax1'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
Traceback (most recent call last):
  File "<pyshell#63>", line 1, in <module>
    treePlotter.createPlot(myTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 81, in createPlot
    plotTree(inTree,(0.5,1.0),'')
  File "C:\Users\34856\Desktop\treePlotter.py", line 59, in plotTree
    plotMidText(cntrPt,parentPt,nodeTxt)
  File "C:\Users\34856\Desktop\treePlotter.py", line 50, in plotMidText
    createPlot.ax1.text(xMid,yMid,txtString)
AttributeError: 'function' object has no attribute 'ax1'
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> treePlotter.createPlot(myTree)
>>> myTree['no surfacing'][3] = 'maybe'
>>> myTree
{'no surfacing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}, 3: 'maybe'}}
>>> treePlotter.createPlot(myTree)
>>> 
=============== RESTART: C:\Users\34856\Desktop\treePlotter.py ===============
>>> import treePlotter
>>> myTree= treePlotter.retrieveTree(0)
>>> myTree
{'no surfacing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}}}
>>> trees.classify(myTree,labels,[1,0])
Traceback (most recent call last):
  File "<pyshell#73>", line 1, in <module>
    trees.classify(myTree,labels,[1,0])
NameError: name 'trees' is not defined
>>> myDat,labels = trees.creatDataSet()
Traceback (most recent call last):
  File "<pyshell#74>", line 1, in <module>
    myDat,labels = trees.creatDataSet()
NameError: name 'trees' is not defined
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
>>> myDat,labels=trees.creatDataSet()
Traceback (most recent call last):
  File "<pyshell#76>", line 1, in <module>
    myDat,labels=trees.creatDataSet()
AttributeError: module 'trees' has no attribute 'creatDataSet'
>>> myDat,labels=trees.createDataSet()
>>> labels
['no surfacing', 'flippers']
>>> myTree = treePlotter.retrieveTree(0)
Traceback (most recent call last):
  File "<pyshell#79>", line 1, in <module>
    myTree = treePlotter.retrieveTree(0)
NameError: name 'treePlotter' is not defined
>>> import treePlotter
>>> myTree = treePlotter.retrieveTree(0)
>>> myTree
{'no surfacing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}}}
>>> myTree = treePlotter.retrieveTree(1)
>>> myTree
{'no surfacing': {0: 'no', 1: {'flippers': {0: {'head': {0: 'no', 1: 'yes'}}, 1: 'no'}}}}
>>> treePlotter.createPlot(myTree)
>>> trees.classify(myTree,labels,[1,0])
Traceback (most recent call last):
  File "<pyshell#86>", line 1, in <module>
    trees.classify(myTree,labels,[1,0])
  File "C:\Users\34856\Desktop\trees.py", line 83, in classify
    firstSides = list(myTree.keys())
NameError: name 'myTree' is not defined
>>> import treePlotter
>>>  myTree = treePlotter.retrieveTree(0)
SyntaxError: unexpected indent
>>> myTree = treePlotter.retrieveTree(0)
>>> trees.classify(myTree,labels,[1,0])
Traceback (most recent call last):
  File "<pyshell#90>", line 1, in <module>
    trees.classify(myTree,labels,[1,0])
  File "C:\Users\34856\Desktop\trees.py", line 83, in classify
    firstSides = list(myTree.keys())
NameError: name 'myTree' is not defined
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
>>> myTree = treePlotter.retrieveTree(0)
Traceback (most recent call last):
  File "<pyshell#92>", line 1, in <module>
    myTree = treePlotter.retrieveTree(0)
NameError: name 'treePlotter' is not defined
>>> import treePlotter
>>> myDat,labels=trees.createDataSet()
>>> myTree = treePlotter.retrieveTree(1)
>>> trees.classify(myTree,labels,[1,0])
Traceback (most recent call last):
  File "<pyshell#96>", line 1, in <module>
    trees.classify(myTree,labels,[1,0])
  File "C:\Users\34856\Desktop\trees.py", line 92, in classify
    return classLabel
UnboundLocalError: local variable 'classLabel' referenced before assignment
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
>>> import treePlotter
>>> myDat,labels=trees.createDataSet()
>>> myTree = treePlotter.retrieveTree(1)
>>> trees.classify(myTree,labels,[1,0])
Traceback (most recent call last):
  File "<pyshell#101>", line 1, in <module>
    trees.classify(myTree,labels,[1,0])
  File "C:\Users\34856\Desktop\trees.py", line 92, in classify
    return classLabel
UnboundLocalError: local variable 'classLabel' referenced before assignment
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
>>> import treePlotter
>>> myDat,labels=trees.createDataSet()
>>> myTree = treePlotter.retrieveTree(1)
>>> 
>>> trees.classify(myTree,labels,[1,0])
Traceback (most recent call last):
  File "<pyshell#107>", line 1, in <module>
    trees.classify(myTree,labels,[1,0])
  File "C:\Users\34856\Desktop\trees.py", line 90, in classify
    classLabel = classify(secondDict[key],featLabels,testVec)
  File "C:\Users\34856\Desktop\trees.py", line 90, in classify
    classLabel = classify(secondDict[key],featLabels,testVec)
  File "C:\Users\34856\Desktop\trees.py", line 86, in classify
    featIndex = featLabels.index(firstStr)
ValueError: 'head' is not in list
>>> myTree = treePlotter.retrieveTree(1)
>>> myTree = treePlotter.retrieveTree(0)
>>> trees.classify(myTree,labels,[1,0])
'no'
>>> trees.classify(myTree,labels,[1,1])
'yes'
>>> trees.classify(myTree,labels,[1,2])
Traceback (most recent call last):
  File "<pyshell#112>", line 1, in <module>
    trees.classify(myTree,labels,[1,2])
  File "C:\Users\34856\Desktop\trees.py", line 90, in classify
    classLabel = classify(secondDict[key],featLabels,testVec)
  File "C:\Users\34856\Desktop\trees.py", line 92, in classify
    return classLabel
UnboundLocalError: local variable 'classLabel' referenced before assignment
>>> trees.classify(myTree,labels,[0,0])
'no'
>>> trees.classify(myTree,labels,[0,1])
'no'
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> trees.storeTree(myTree,'classifierStorage.txt')
Traceback (most recent call last):
  File "<pyshell#115>", line 1, in <module>
    trees.storeTree(myTree,'classifierStorage.txt')
NameError: name 'trees' is not defined
>>> import trees
>>> trees.storeTree(myTree,'classifierStorage.txt')
Traceback (most recent call last):
  File "<pyshell#117>", line 1, in <module>
    trees.storeTree(myTree,'classifierStorage.txt')
NameError: name 'myTree' is not defined
>>> myTree = treePlotter.retrieveTree(0)
Traceback (most recent call last):
  File "<pyshell#118>", line 1, in <module>
    myTree = treePlotter.retrieveTree(0)
NameError: name 'treePlotter' is not defined
>>> import treePlotter
>>> myTree = treePlotter.retrieveTree(0)
>>> trees.storeTree(myTree,'classifierStorage.txt')
Traceback (most recent call last):
  File "<pyshell#121>", line 1, in <module>
    trees.storeTree(myTree,'classifierStorage.txt')
  File "C:\Users\34856\Desktop\trees.py", line 97, in storeTree
    pickle.dump(inputTree,fw)
TypeError: write() argument must be str, not bytes
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
>>> import treePlotter
>>> myTree = treePlotter.retrieveTree(0)
>>> trees.storeTree(myTree,'classifierStorage.txt')
>>> trees.grabTree('classifierStorage.txt')
Traceback (most recent call last):
  File "<pyshell#126>", line 1, in <module>
    trees.grabTree('classifierStorage.txt')
  File "C:\Users\34856\Desktop\trees.py", line 103, in grabTree
    return pickle.load(fr)
UnicodeDecodeError: 'gbk' codec can't decode byte 0x80 in position 0: illegal multibyte sequence
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
>>> import treePlotter
>>> myTree = treePlotter.retrieveTree(0)
>>> trees.storeTree(myTree,'classifierStorage.txt')
>>> trees.grabTree('classifierStorage.txt')
{'no surfacing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}}}
>>> 
>>> fr = open('lenses.txt')
>>> lenses = [list.strip().split('\t')for inst in fr.readline()]
Traceback (most recent call last):
  File "<pyshell#134>", line 1, in <module>
    lenses = [list.strip().split('\t')for inst in fr.readline()]
  File "<pyshell#134>", line 1, in <listcomp>
    lenses = [list.strip().split('\t')for inst in fr.readline()]
AttributeError: type object 'list' has no attribute 'strip'
>>> lenses = [inst.strip().split('\t')for inst in fr.readline()]
>>> lensesLabels = ['age','perscript','astigmatic','tearRate']
>>> lensesTree = trees.creatrTree(lenses,lensesLabels)
Traceback (most recent call last):
  File "<pyshell#137>", line 1, in <module>
    lensesTree = trees.creatrTree(lenses,lensesLabels)
AttributeError: module 'trees' has no attribute 'creatrTree'
>>> lensesTree = trees.createTree(lenses,lensesLabels)
Traceback (most recent call last):
  File "<pyshell#138>", line 1, in <module>
    lensesTree = trees.createTree(lenses,lensesLabels)
AttributeError: module 'trees' has no attribute 'createTree'
>>> lensesTree = trees.createTrees(lenses,lensesLabels)
Traceback (most recent call last):
  File "<pyshell#139>", line 1, in <module>
    lensesTree = trees.createTrees(lenses,lensesLabels)
  File "C:\Users\34856\Desktop\trees.py", line 69, in createTrees
    return majorityCnt(classList)
  File "C:\Users\34856\Desktop\trees.py", line 60, in majorityCnt
    sortedClassCount = sorted(classCount.iteritems(),\
AttributeError: 'dict' object has no attribute 'iteritems'
>>> 
================== RESTART: C:\Users\34856\Desktop\trees.py ==================
>>> import trees
			      
>>> import treePlotter
			      
>>> myTree = treePlotter.retrieveTree(0)
			      
>>> trees.storeTree(myTree,'classifierStorage.txt')
			      
>>> trees.grabTree('classifierStorage.txt')
			      
{'no surfacing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}}}
>>> fr = open('lenses.txt')
			      
>>> lenses = [list.strip().split('\t')for inst in fr.readline()]
			      
Traceback (most recent call last):
  File "<pyshell#146>", line 1, in <module>
    lenses = [list.strip().split('\t')for inst in fr.readline()]
  File "<pyshell#146>", line 1, in <listcomp>
    lenses = [list.strip().split('\t')for inst in fr.readline()]
AttributeError: type object 'list' has no attribute 'strip'
>>> lenses = [inst.strip().split('\t')for inst in fr.readline()]
			      
>>> lensesLabels = ['age','perscript','astigmatic','tearRate']
			      
>>> lensesTree = trees.creatrTree(lenses,lensesLabels)
			      
Traceback (most recent call last):
  File "<pyshell#149>", line 1, in <module>
    lensesTree = trees.creatrTree(lenses,lensesLabels)
AttributeError: module 'trees' has no attribute 'creatrTree'
>>> lensesTree = trees.createTrees(lenses,lensesLabels)
			      
>>> lensesTree
			      
'o'
>>> treePlotter.createPlot(lensesTree)
			      
Traceback (most recent call last):
  File "<pyshell#152>", line 1, in <module>
    treePlotter.createPlot(lensesTree)
  File "C:\Users\34856\Desktop\treePlotter.py", line 77, in createPlot
    plotTree.totalW = float(getNumLeafs(inTree))
  File "C:\Users\34856\Desktop\treePlotter.py", line 18, in getNumLeafs
    firstSides = list(myTree.keys())
AttributeError: 'str' object has no attribute 'keys'
>>> myDat,labels=trees.createDataSet()
			      
>>>

猜你喜欢

转载自blog.csdn.net/ihiefoxboq/article/details/82745167
今日推荐
周排行
成为C++高手之宏与枚举
在CAD二次开发中使用进度条
Js插件ECharts，HighCharts学习网址整理
Celery提交任务出错(on windows.)
cephfs内核客户端性能追踪
thinkphp中PHPExcel用法
EntityFramework动态组合多排序字段
汇编语言（八）实验9 根据材料编程
安装ubuntu后必须做的事情（对我而言）
JS函数式编程
每日归档
更多
2024-10-22(0)
2024-10-21(0)
2024-10-20(0)
2024-10-19(0)
2024-10-18(0)
2024-10-17(0)
2024-10-16(0)
2024-10-15(0)
2024-10-14(0)
2024-10-13(0)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022