AttributeError:' numpy.int64'对象没有属性' startswith'

时间:2015-05-19 19:24:14

标签: python matplotlib ipython-notebook seaborn

当我尝试在ipython笔记本中使用seaborn创建一个factorplot时,我收到此错误。

这是堆栈跟踪的结束:

/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axes.pyc in get_legend_handles_labels(self, legend_handler_map)
   4317             label = handle.get_label()
   4318             #if (label is not None and label != '' and not label.startswith('_')):
-> 4319             if label and not label.startswith('_'):
   4320                 handles.append(handle)
   4321                 labels.append(label)

AttributeError: 'numpy.int64' object has no attribute 'startswith'

以下是我的导入:

import numpy as np
import pandas as pd
from pandas import Series,DataFrame

import math

import matplotlib.pyplot as plt
import seaborn as sns
sns.set_style('whitegrid')
%matplotlib inline

from sklearn.linear_model import LogisticRegression
from sklearn.cross_validation import train_test_split

from sklearn import metrics

import statsmodels.api as sm

这是我的代码:

df = sm.datasets.fair.load_pandas().data
df['had_affair'] = df.affairs.apply(lambda x: 1 if x != 0 else 0)
sns.factorplot('age', data=df, hue='had_affair', palette='coolwarm')

问题似乎是我用于hue的列是整数而不是字符串。使用df['had_affair_str'] = df.had_affair.apply(str)之类的内容创建新列,然后使用had_affair_str作为我的hue会导致错误消失,但我之后的在线教程会使用此精确代码而不会获取任何内容错误。这是matplotlib或seaborn的已知问题吗?我的其中一个套餐过时了吗?

以下是我的python包的版本:

ipython==3.1.0
numpy==1.9.2
pandas==0.16.1
matplotlib==1.4.3
seaborn==0.5.1
scikit-learn==0.16.1
statsmodels==0.6.1

编辑:

df.info()的输出:

<class 'pandas.core.frame.DataFrame'>
Int64Index: 6366 entries, 0 to 6365
Data columns (total 11 columns):
rate_marriage      6366 non-null float64
age                6366 non-null float64
yrs_married        6366 non-null float64
children           6366 non-null float64
religious          6366 non-null float64
educ               6366 non-null float64
occupation         6366 non-null float64
occupation_husb    6366 non-null float64
affairs            6366 non-null float64
had_affair         6366 non-null int64
had_affair_str     6366 non-null object
dtypes: float64(9), int64(1), object(1)
memory usage: 596.8+ KB

1 个答案:

答案 0 :(得分:0)

matplotlib期望你的标签系列had_affair的dtypes是对象/字符串,但它是numpy.int64

您可以使用以下命令将numpy.int64强制转换为字符串:

df['had_affair'] = df['had_affair'].astype(str)