When importing Sklearn from Jupyter Notebook, the following error is reported

But I have installed it before; It does not report errors on the Python command line. Then Baidu checked the data, but did not find a similar situation. I print the path in Python and in IPython. I print the path in Python and I print the path in IPython.

'D:\\python\\Anaconda3\\envs\\v2\\python35.zip',

'D:\\python\\Anaconda3\\envs\\v2\\DLLs',

'D:\\python\\Anaconda3\\envs\\v2\\lib',

'D:\\python\\Anaconda3\\envs\\v2',

'C:\\Users\\mtl\\AppData\\Roaming\\Python\\Python35\\site-packages',

'D:\\python\\Anaconda3\\envs\\v2\\lib\\site-packages'

Print out the path in IPython as follows:

'D:\\python\\Anaconda3\\envs\\v2\\python35.zip', 
'D:\\python\\Anaconda3\\envs\\v2\\DLLs', 
'D:\\python\\Anaconda3\\envs\\v2\\lib', 
'D:\\python\\Anaconda3\\envs\\v2', 
'C:\\Users\\mtl\\AppData\\Roaming\\Python\\Python35\\site-packages', 
'D:\\python\\Anaconda3\\envs\\v2\\lib\\site-packages', 
'D:\\python\\Anaconda3\\envs\\v2\\lib\\site-packages\\IPython\\extensions', 
'C:\\Users\\mtl\\.ipython'

C:\\Users\ MTL \\.ipython: C:\\Users\ MTL \\.ipython: C:\\Users\\ MTL \\.ipython: C:\\Users\\ MTL \\
Summary: I think because the last folder is empty, the previous files will be flushed out, but I check the information: when looking for the module (model), it will follow the path to find, if found, it will jump out. This interpretation is in conflict here, but also hope to understand this part of the god together to resolve

Invalid character in identifier: SyntaxError: Invalid character in identifier
Online a search answer, said that there is a Chinese state of parentheses, this is indeed a reason;
Another reason is that there is a space at the end of the code. When the space is removed, the code runs decisively

Update 2020.08.24: It seems that the reason for this is that Python 2 and Python 3 have different default encoding formats.
Python 2 is GBK and Python 3 is UTF-8. Some older packages can cause coding problems when installed.

---

Because PyCharm recently pops up RELP Communications all the time, it affects the efficiency of the code.
REPL (Read-Eval-Print Loop), which translates as “read-evaluation-output” Loop, is a simple, interactive programming environment.
Sounds useful, so I want to PIP the REPL directly in PyCharm.

Error result:
ERROR: Command errored out with exit status 1:

 
The main error is shown in the last few lines:
UnicodedecodeError: ‘GBK’ codec can’t decode byte 0xa6 in position 1246: illegal multibyte sequence
—————————————-
ror: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Positioning problems:
UnicodeDecodeError, indicating an encoding problem.
Specifically, on lines 10 and 17 of the setup.py file, the read file is encoded as GBK, not UTF-8, so the error prevents installation.

---

Update the successful solution:
Because you cannot use Project Interpreter in PyCharm.
Solution: download the source code package, make code changes and then install.
1. Locate the file of the original Package and find the line that reported the error.
REPL official address is: https://github.com/mbr/repl. View the source code of the setup file that reported the error.

Location problem: the source code does not specify the open encoding, so the default is GBK encoding.
Error source code:

def read(fname):
    return open(os.path.join(os.path.dirname(__file__), fname)).read()

 
2. After downloading the original package file, unpack it and find the setup.py file. Change this line in the file, add encoding=’utf-8′, save it and package it as a new installation package.
Modified code:

def read(fname):
    return open(os.path.join(os.path.dirname(__file__), fname),encoding='utf-8').read()

 
3. Enter PIP install repl-1.0.tar.gz and install with the new package. Success!

---

This problem bothered me for a week, but it turned out that the solution was very simple!
The most important thing to solve the problem is to locate the cause of the error, and then find a solution step by step according to the reason.

You need to update PyGal

pip uninstall pygal
pip install pygal

This article reprinted from https://www.it610.com/article/1282212275846922240.htm
if you have offended, please contact me
I looked for Matplotlib button for a long time before I found something I could understand. I don’t know if it was too simple, so no one wrote it.
ttonAxe = PLT.axes ([0.94, 0.03, 0.03, 0.03]) u>to set the position of the button.
tton1 = Button(buttonAxe, 'p2',color='khaki', overcolor='yellow') i>ed to create the Button and to set the color and the color of the Button when the mouse is over the Button.
third line tton1.on_clicked (show2) s>the function triggered after the button is clicked.
in addition to write after click the button to trigger functions should pay attention to write the event in the brackets, such as def show2 (event) :

buttonaxe = plt.axes([0.94, 0.03, 0.03, 0.03])
button1 = Button(buttonaxe, 'p2',color='khaki', hovercolor='yellow')
button1.on_clicked(show2)