PyCharm has a neat option that allows when pressing ctrl+enter to automatically import libraries (e.g. os, sys, etc).
It used to work for NumPy as well, that is when writing:
z = np.zeros(5)
it would give a suggestions to import numpy as np.
However, after installing several packages this disappeared. Are these suggestions are defined anywhere? Can I change/add to them?
Related
I'm new to python and I'm having an issue importing a module that imports numpy,PIL and os packages. I'll try and be as clear as possible with my problem
So I have a module lets call it preprocessing.py in which I've written a class to process an image imported from PIL using Image and converting it to a numpy array so the structure looks like the following (note method1 converts a jpg to numpy array)
----- preprocessing.py
import numpy as np
import os
from PIL import Image
Class process_object:
method1
Now I want to use this module as follows I want to import process_object from preprocessing.py and use method1 to process an image again imported using Image in PIL. So my script computation.py looks like the following
---computation.py
import os
import numpy as np
from PIL import Image
a = process_image(input)
a.method1()
However, when I do this I get the following error message
ImportError: No module named numpy
Could someone explain to me what is going on and how to fix it? I'd really appreciate an explanation which allows me to understand what is going on under the hood, so I can avoid situations like this. I really appreciate any help! Thanks!!
Check in which version of Python pip is installing numpy. It could be that when pip installs it, it's pointing to a different Python version on your system.
For problems like these, I would recommend using:
https://github.com/pyenv/pyenv-virtualenv
Will handle Python versions for you, so that you can differentiate which packages are being installed.
I will also recommend using PyCharm's Community Edition.
https://www.jetbrains.com/pycharm/download
Excellent tool and lets you create your own environment.
Hope this helps.
https://sourceforge.net/projects/numpy/files//NumPy/1.5.0/NOTES.txt/view. This is the support for numpy in Python 3.0. You probably need a newer version of numpy. You can also use:
pip install numpy
or
pip3 install numpy
I wrote a GUI, for which I used these imports:
import os
import sys
import serial
import scipy
import string
import time
import datetime
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
from collections import deque
from numpy import array
from pylab import xlabel, ylabel, subplot
from scipy.fftpack import fft
from pylab import *
There is a red line below sys and time, I am using pycharm community edition 4.5.3, it is showing the reason for this error is 'no module named sys' and same for time.
But when i tried to run it, it works perfectly.
What is the reason behind it and will it affect my code in future?
Change the python interpreter from python to python2.7. It's helped me.
This is something I just ran into with Intellij 2017.3.4 where it could find every module except sys and time in the editor, but everything would run fine. I had both 2.7 and 3.5 version of python and it did not seem to matter which one I selected as the SDK. I tried adding and removing them.
When I went to Project Structure -> Platform Settings -> SDKs -> Python 3.5 -> Packages it prompted a warning that Python packaging tools not found. and had an install link. I installed it and the editor no longer complained about sys and time. When I switched SDKs to 2.7 (without installing the packaging tools) it complained again.
So I am not exactly sure what is happening that that seemed to fix it for me it other people run into this problem.
I have a mac OS X Yosimite and I'm using python 2.7.10 and Pycharm as my IDLE. I have pylab installed properly but I cannot use any of its modules.
When a try:
from pylab import show
(or any module) it says
ImportError: cannot import name show
But when I run just the line import pylab I get no errors!
I tried leaving that way and calling the module anyway.
pylab.imshow(...)
But I got the same error obviously. Do I have to install those modules separately?
PS: I'm almost sure the problem has nothing to do with the interpreter
Try importing from matplotlib.pyplot, rather than from pylab (this is now the recommended way to import matplotlib):
From example:
from matplotlib.pyplot import imshow
imshow()
Or:
import matplotlib.pyplot as plt
plt.imshow()
I am trying to build an exe using PyInstaller (with Python 2.7) and have been stumped. My python code uses the modules wx, matplotlib, basemap (a part of matplotlib), and pylab. There are others, but these seem to be the main ones.
I have installed PyInstaller and then i did:
python pyinstaller.py C:/Python27/Convertthisfile.py
It goes through the whole process, but when i try to run the final executable, it comes up with the error:
"No module named PyQt4.QtCore"
I have installed PyQt GPL 4.9.1 for Python 2.7. However, I have no idea where PyQt is even being used in my code. I don't specify it anywhere that i know of.
Anyone have any thoughts? Nothing I do seems to work. I have even tried the GUI2EXE.py -- i can't get py2exe, pyinstaller, or cx_freeze to work.
HELP!
I have added my code below to hopefully help. To answer the comments, yes, my code is located in C:\Python27. I have no problem "building" it with pyinstaller, but the above error comes up when i try to run the given executable. I have searched the code and do not see any use of PyQt4.
When i run cx_freeze, i have issues with the basemap data files -- they do not seem to be included in the ".zip" when i build it. Also, none of my modules seem to get included either.
Here is what i import for my code (some of these functions are my own -- mainly the last ones listed).
import wx
import time
from matplotlib.backends.backend_wx import FigureCanvasWx as FigureCanvas
from mpl_toolkits.basemap import Basemap
from matplotlib.figure import Figure
from datetime import datetime
import wx.calendar as cal
import wx.lib.mixins.listctrl as listmix
from pylab import *
from decimal import *
import adodbapi
import annote_new
import cPickle as pickle
import calc_dist
import Game_Score
import Calculate_Distance
import Duplicate_Finder
import copy
Hopefully this clears things up?
Is it possible to start the bpython interpreter so that it always runs some custom commands when it launches?
In my case I simply want to do:
import numpy as np
import matplotlib.pyplot as plt
I can't see anything in the docs. Anyone know a way?
It is written in the docs, just not clearly labelled as such at: http://docs.bpython-interpreter.org/django.html
Gist of it is you can have an environment variable called PYTHONSTARTUP. bpython will execute this file before you get dropped in the interpreter.
While ikanobori's answer is the way to go here, I thought I show another simple alternative.
import numpy as np
import matplotlib.pyplot as plt
import bpython
bpython.embed(locals_=locals())
This will start up the bpython REPL and load in the local variables and other symbols. This would be useful if you wanted to have more than one customized shell.