小编yen*_*eng的帖子

我使用KerasClassifier来训练分类器.

代码如下:

import numpy
from pandas import read_csv
from keras.models import Sequential
from keras.layers import Dense
from keras.wrappers.scikit_learn import KerasClassifier
from keras.utils import np_utils
from sklearn.model_selection import cross_val_score
from sklearn.model_selection import KFold
from sklearn.preprocessing import LabelEncoder
from sklearn.pipeline import Pipeline
# fix random seed for reproducibility
seed = 7
numpy.random.seed(seed)
# load dataset
dataframe = read_csv("iris.csv", header=None)
dataset = dataframe.values
X = dataset[:,0:4].astype(float)
Y = dataset[:,4]
# encode class values as integers
encoder = LabelEncoder()
encoder.fit(Y)
encoded_Y = encoder.transform(Y)
#print("encoded_Y") …

我通过以下方式安装django:

git clone git://github.com/django/django.git

pip install -e django /

我使用的是Ubuntu 16.04.

但是会出现一些错误:

Obtaining file:///home/leo/django
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/home/leo/django/setup.py", line 32, in <module>
        version = __import__('django').get_version()
      File "django/__init__.py", line 1, in <module>
        from django.utils.version import get_version
      File "django/utils/version.py", line 60, in <module>
        @functools.lru_cache()
    AttributeError: 'module' object has no attribute 'lru_cache'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /home/leo/django/

如何解决这个问题？谢谢.

我有一个数据帧:

import pandas as pd

df = pd.DataFrame(data={'x':[7,1,9], 'y':[4,5,6],'z':[1,8,3]}, index=['a', 'b', 'c'])

表明:

如何按行['a']对此数据帧进行排序:对数据帧进行排序后,可能是: