标签: ipython

当我想在我的macbook上运行ipython notebook时,我收到以下错误.有谁知道如何解决这一问题？你能帮我解决一下吗？

ERROR:root:Exception in I/O handler for fd 6
Traceback (most recent call last):
  File "//anaconda/lib/python2.7/site-packages/zmq/eventloop/ioloop.py", line 346, in start
    self._handlers[fd](fd, events)
  File "//anaconda/lib/python2.7/site-packages/tornado/netutil.py", line 167, in accept_handler
    callback(connection, address)
  File "//anaconda/lib/python2.7/site-packages/tornado/tcpserver.py", line 217, in _handle_connection
    do_handshake_on_connect=False)
  File "//anaconda/lib/python2.7/site-packages/tornado/netutil.py", line 407, in ssl_wrap_socket
    return ssl.wrap_socket(socket, **dict(context, **kwargs))
  File "//anaconda/python.app/Contents/lib/python2.7/ssl.py", line 387, in wrap_socket
    ciphers=ciphers)
  File "//anaconda/python.app/Contents/lib/python2.7/ssl.py", line 141, in __init__
    ciphers)
SSLError: [Errno 336445449] _ssl.c:368: error:140DC009:SSL routines:SSL_CTX_use_certificate_chain_file:PEM lib
ERROR:root:Exception in I/O handler for fd 6
Traceback (most recent call last): …

我正在尝试从文件菜单（在2.0中添加好的功能）将笔记本转换为html，但是当我这样做时，出现500：Internal Server Error屏幕，显示以下文本：

nbconvert failed: Pandoc wasn't found.
Please check that pandoc is installed:
http://johnmacfarlane.net/pandoc/installing.html

我已经使用Windows Installer从链接中安装了Pandoc，但仍然收到相同的错误。对于如何解决这个问题，有任何的建议吗？我需要将刚刚下载的Pandoc文件夹或pandoc.exe放在哪里才能使此工作正常进行？

在Windows 7上运行IPython Notebook时,我遇到以下异常.这似乎是一个安装问题.

ERROR:root:Exception in I/O handler for fd 644
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\zmq\eventloop\ioloop.py", line 340, in start
    self._handlers[fd](fd, events)
KeyError: 644

我正在研究以下类型的数据.

      itemid      category             subcategory               title
    1 10000010   ?????????     ?????????? ? ????????     Toyota Sera, 1991
    2 10000025      ??????         ??????????? ?????         ?????? ??????
    3 10000094 ?????? ???? ??????, ?????, ??????????      ?????? Steilmann
    4 10000101   ?????????     ?????????? ? ????????      Ford Focus, 2011
    5 10000132   ?????????     ???????? ? ??????????       ??????? 3.0 Bar
    6 10000152   ?????????     ?????????? ? ???????? ??? 2115 Samara, 2005

现在我运行以下命令

    import pandas as pd
    trainingData = pd.read_table("train.tsv",nrows=10, header=0,encoding='utf-8')


    trainingData['itemid'].head()
    0    10000010
    1    10000025
    2    10000094
    3    10000101
    4    10000132
    Name: itemid …

我正在使用IPython 2.7。我希望打印最后的3或5或一般的'n'命令。该%hist命令将打印到目前为止的所有命令。请注意，此处的“ n”不是行号（即IPython对每行的索引）。

我想为Ipython笔记本使用另一个主题,所以我按照这个说明问题是我在OSX中,我没有wget,我安装了自制软件.有人可以帮我设置一个黑暗主题的ipython笔记本吗？我试过这个:

brew /Users/user/.ipython/profile_notebooks/static/custom/custom.css
https://raw.githubusercontent.com/nsonnad/base16-ipython-notebook/master/base16-ocean-dark.css

我想在代码的最后一行上每隔一定间隔（1000）之后打印一个值，而不是每个单个值。

DARTS=200000
hits = 0
throws = 0
rangen = RanGenerator()
pi = 0
avg = 0
mu = 0
var = 0
dev = 1

for i in range (1, DARTS):
    throws += 1
    x = rangen.rand()
    y = rangen.rand()
    z = rangen.rand()
    tt = x**2 + y**2 + z**2
    dist = sqrt(tt)
    if dist <= 1.0:
        hits = hits + 1.0
        pi = 6 * (hits / throws)
        avg = avg + pi
        mu = avg/throws
        var = …

我的问题是:如何编写可以访问IPython笔记本命名空间的IPython单元魔术？

IPython允许编写用户定义的单元格魔术.我的计划是创建一个绘图函数,它可以绘制一个或多个任意Python表达式(基于Pandas Series对象的表达式),其中单元格字符串中的每一行都是图表中的单独图形.

这是细胞魔法的代码:

def p(line, cell):
    import pandas as pd
    import matplotlib.pyplot as plt

    df = pd.DataFrame()
    line_list = cell.split('\n')

    counter = 0
    for line in line_list:
        df['series' + str(counter)] = eval(line)      
        counter += 1

    plt.figure(figsize = [20,6])
    ax = plt.subplot(111)
    df.plot(ax = ax)


def load_ipython_extension(ipython):
    ipython.register_magic_function(p, 'cell')

该函数以字符串形式接收整个单元格内容.然后,该字符串由换行符拆分,并使用eval()进行评估.结果将添加到Pandas DataFrame中.最后,使用matplotlib绘制DataFrame.

用法示例:首先在IPython笔记本中定义Pandas Series对象.

import pandas as pd
ts = pd.Series([1,2,3])

然后在IPython笔记本中调用魔法(下面的整个代码是一个单元格):

%%p
ts * 3
ts + 1

此代码失败,并显示以下错误:

NameError: name 'ts' is not defined

我怀疑问题是该p函数只接收ts * …

第一次尝试散景.使用bokeh.pydata.org中的以下示例代码:

from collections import OrderedDict

from bokeh.charts import Scatter
from bokeh.sampledata.iris import flowers

output_notebook()

在iPython(Anaconda,py 3.4,Win 7)中,收到以下错误:

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-2-c57c6fa8f51a> in <module>()
----> 1 output_notebook()

NameError: name 'output_notebook' is not defined

为什么？这是直接的例子.

我有一个使用pyinstaller构建的应用程序,它使用PySide作为其Qt Gui.我通过嵌入ipython qtconsole包含了一个交互式提示.这打破了pyinstaller创建的构建.

这是一个最小(非)工作的例子:

from PySide.QtGui import *

from IPython.qt.console.rich_ipython_widget import RichIPythonWidget
from IPython.qt.inprocess import QtInProcessKernelManager
from IPython.lib import guisupport

class IPythonWidget(RichIPythonWidget):
    def __init__(self, parent=None, **kwargs):
        super(self.__class__, self).__init__(parent)
        self.app = app = guisupport.get_app_qt4()
        self.kernel_manager = kernel_manager = QtInProcessKernelManager()
        kernel_manager.start_kernel()

        self.kernel = kernel = kernel_manager.kernel
        kernel.gui = 'qt4'
        self.kernel_client = kernel_client = kernel_manager.client()
        kernel_client.start_channels()

if __name__ == '__main__':
    app = QApplication([])
    i = IPythonWidget()
    i.show()
    app.exec_()

当直接从源(python mwe.py)运行时,它弹出一个ipython qt控制台窗口.当我在一个目录中使用pyinstaller捆绑这个并运行exe时,我得到这个:

Traceback (most recent call last):
  File "<string>", line 3, in <module>
  File …