Questions tagged [ipython]
IPython is a feature-rich interactive shell for Python, and provides a kernel for frontends such as IPython Notebook and Jupyter Notebook.
ipython
7,219
questions
1111
votes
15
answers
546k
views
What is the difference between pip and conda?
I know pip is a package manager for python packages. However, I saw the installation on IPython's website use conda to install IPython.
Can I use pip to install IPython? Why should I use conda as ...
- 12.3k
947
votes
11
answers
1.3m
views
How to make IPython notebook matplotlib plot inline
I am trying to use IPython notebook on MacOS X with Python 2.7.2 and IPython 1.1.0.
I cannot get matplotlib graphics to show up inline.
import matplotlib
import numpy as np
import matplotlib.pyplot ...
- 10.5k
938
votes
12
answers
1.0m
views
646
votes
23
answers
89k
views
Using IPython / Jupyter Notebooks Under Version Control
What is a good strategy for keeping IPython notebooks under version control?
The notebook format is quite amenable for version control: if one wants to version control the notebook and the outputs ...
- 7,131
556
votes
14
answers
320k
views
Reloading submodules in IPython
Currently I am working on a python project that contains sub modules and uses numpy/scipy. Ipython is used as interactive console. Unfortunately I am not very happy with workflow that I am using right ...
- 5,665
555
votes
15
answers
412k
views
How do I increase the cell width of the Jupyter/ipython notebook in my browser?
I would like to increase the width of the ipython notebook in my browser. I have a high-resolution screen, and I would like to expand the cell width/size to make use of this extra space.
Thanks!
- 11.2k
520
votes
5
answers
795k
views
Hide all warnings in IPython
I need to produce a screencast of an IPython session, and to avoid confusing viewers, I want to disable all warnings emitted by warnings.warn calls from different packages. Is there a way to configure ...
- 33.5k
423
votes
20
answers
459k
views
How do I convert a IPython Notebook into a Python file via commandline?
I'm looking at using the *.ipynb files as the source of truth and programmatically 'compiling' them into .py files for scheduled jobs/tasks.
The only way I understand to do this is via the GUI. Is ...
- 4,263
419
votes
10
answers
514k
views
How to make inline plots in Jupyter Notebook larger? [duplicate]
I have made my plots inline on my Ipython Notebook with "%matplotlib inline."
Now, the plot appears. However, it is very small. Is there a way to make it appear larger using either notebook ...
- 30k
376
votes
25
answers
548k
views
How do I add python3 kernel to jupyter (IPython)
My Jupyter notebooks installed with python 2 kernel. I do not understand why. I might have messed something up when I did the install. I already have python 3 installed. How can I add it to Jupyter?
...
- 4,778
362
votes
15
answers
458k
views
357
votes
10
answers
241k
views
Progress indicator during pandas operations
I regularly perform pandas operations on data frames in excess of 15 million or so rows and I'd love to have access to a progress indicator for particular operations.
Does a text based progress ...
- 6,483
345
votes
17
answers
495k
views
In which conda environment is Jupyter executing?
I have jupyter/anaconda/python3.5.
How can I know which conda environment is my jupyter notebook running on?
How can I launch jupyter from a new conda environment?
- 18.2k
344
votes
14
answers
560k
views
Simple way to measure cell execution time in ipython notebook
I would like to get the time spent on the cell execution in addition to the original output from cell.
To this end, I tried %%timeit -r1 -n1 but it doesn't expose the variable defined within cell.
%%...
- 21.4k
330
votes
16
answers
527k
views
How can I display an image from a file in Jupyter Notebook?
I would like to use an IPython notebook as a way to interactively analyze some genome charts I am making with Biopython's GenomeDiagram module. While there is extensive documentation on how to use ...
- 30.3k
324
votes
14
answers
514k
views
Inserting image into IPython notebook markdown
I am starting to depend heavily on the IPython notebook app to develop and document algorithms. It is awesome; but there is something that seems like it should be possible, but I can't figure out how ...
- 4,335
323
votes
32
answers
776k
views
Change IPython/Jupyter notebook working directory
When I open a Jupyter notebook (formerly IPython) it defaults to C:\Users\USERNAME.
How can I change this so to another location?
- 42.2k
309
votes
6
answers
302k
views
Autoreload of modules in IPython [duplicate]
Is there a way to have IPython automatically reload all changed code? Either before each line is executed in the shell or failing that when it is specifically requested to. I'm doing a lot of ...
- 5,872
283
votes
15
answers
467k
views
How to run an .ipynb Jupyter Notebook from terminal?
I have some code in a .ipynb file and got it to the point where I don't really need the "interactive" feature of IPython Notebook. I would like to just run it straight from a Mac Terminal ...
- 8,348
278
votes
10
answers
596k
views
How to display pandas DataFrame of floats using a format string for columns?
I would like to display a pandas dataframe with a given format using print() and the IPython display(). For example:
df = pd.DataFrame([123.4567, 234.5678, 345.6789, 456.7890],
...
- 187k
273
votes
6
answers
404k
views
How to load/edit/run/save text files (.py) into an IPython notebook cell?
I've recently moved over to using IPython notebooks as part of my workflow. However, I've not been successful in finding a way to import .py files into the individual cells of an open IPython ...
- 2,833
267
votes
11
answers
336k
views
Using both Python 2.x and Python 3.x in IPython Notebook
I use IPython notebooks and would like to be able to select to create a 2.x or 3.x python notebook in IPython.
I initially had Anaconda. With Anaconda a global environment variable had to be changed ...
- 4,206
257
votes
7
answers
177k
views
What is the difference between Python and IPython?
What exactly is the difference between Python and IPython?
If I write code in Python, will it run in IPython as is or does it need to be modified?
I know IPython is supposed to be an interactive ...
- 2,731
252
votes
6
answers
347k
views
How to embed HTML into IPython output?
Is it possible to embed rendered HTML output into IPython output?
One way is to use
from IPython.core.display import HTML
HTML('<a href="http://example.com">link</a>')
or (IPython ...
- 8,307
237
votes
6
answers
378k
views
ipython notebook clear cell output in code
In a iPython notebook, I have a while loop that listens to a Serial port and print the received data in real time.
What I want to achieve to only show the latest received data (i.e only one line ...
- 4,444
235
votes
13
answers
278k
views
collapse cell in jupyter notebook
I am using ipython Jupyter notebook. Let's say I defined a function that occupies a lot of space on my screen. Is there a way to collapse the cell?
I want the function to remain executed and ...
- 4,604
223
votes
7
answers
336k
views
Check if a value exists in pandas dataframe index
I am sure there is an obvious way to do this but cant think of anything slick right now.
Basically instead of raising exception I would like to get True or False to see if a value exists in pandas df ...
- 6,165
222
votes
7
answers
715k
views
How to read a .xlsx file using the pandas Library in iPython?
I want to read a .xlsx file using the Pandas Library of python and port the data to a postgreSQL table.
All I could do up until now is:
import pandas as pd
data = pd.ExcelFile("*File Name*")
Now I ...
- 2,447
219
votes
12
answers
322k
views
How to show PIL Image in ipython notebook
This is my code
from PIL import Image
pil_im = Image.open('data/empire.jpg')
I would like to do some image manipulation on it, and then show it on screen.
I am having problem with showing PIL Image ...
- 7,102
215
votes
23
answers
446k
views
"ImportError: No module named" when trying to run Python script
I'm trying to run a script that launches, amongst other things, a python script. I get a ImportError: No module named ..., however, if I launch ipython and import the same module in the same way ...
- 3,463
204
votes
16
answers
132k
views
Step-by-step debugging with IPython
From what I have read, there are two ways to debug code in Python:
With a traditional debugger such as pdb or ipdb. This supports commands such as c for continue, n for step-over, s for step-into etc....
- 93.9k
201
votes
12
answers
238k
views
Showing line numbers in IPython/Jupyter Notebooks
Error reports from most language kernels running in IPython/Jupyter Notebooks indicate the line on which the error occurred, but (at least by default) no line numbers are shown in notebooks.
How is it ...
- 17.3k
200
votes
24
answers
233k
views
How to hide code from cells in ipython notebook visualized with nbviewer?
I have an ipython/jupyter notebook that I visualize using NBviewer.
How can I hide all the code from the notebook rendered by NBviewer, so that only the output of code (e.g. plots and tables) and the ...
- 9,989
200
votes
5
answers
188k
views
How do you suppress output in Jupyter running IPython?
How can output to stdout be suppressed?
A semi-colon can be used to supress display of returned objects, for example
>>> 1+1
2
>>> 1+1; # No output!
However, a function that ...
- 11.8k
200
votes
17
answers
400k
views
My plot in ipython does not show with pyplot.show()
Help required displaying matplotlib plots in ipython. I did not forget to call pyplot.show().
$ ipython --pylab
import matplotlib.pyplot as plt
plt.plot(range(20), range(20))
It returns matplotlib....
- 7,673
195
votes
13
answers
455k
views
IOPub data rate exceeded in Jupyter notebook (when viewing image)
I want to view an image in Jupyter notebook. It's a 9.9MB .png file.
from IPython.display import Image
Image(filename='path_to_image/image.png')
I get the below error:
IOPub data rate exceeded.
The ...
- 6,901
190
votes
8
answers
410k
views
How to clear variables in ipython?
Sometimes I rerun a script within the same ipython session and I get bad surprises when variables haven't been cleared. How do I clear all variables?
And is it possible to force this somehow every ...
- 4,038
186
votes
10
answers
351k
views
How to change color in markdown cells ipython/jupyter notebook?
I'm only looking to format a specific string within a cell. I change that cell's format to "Markdown" but I'm not sure how to change text color of a single word.
I don't want to change the look of ...
- 9,538
183
votes
11
answers
268k
views
Importing an ipynb file from another ipynb file?
Interactive Python (ipython) is simply amazing, especially as you are piecing things together on the fly... and does it in such a way that it is easy to go back.
However, what seems to be interesting ...
- 2,025
174
votes
3
answers
80k
views
ipython: print complete history (not just current session)
in ipython, I can use %hist or %history to print recent history, but this only prints history from current session.
I would like to print all history, similar as bash historycommand does.
What I am ...
- 2,431
173
votes
4
answers
205k
views
How to display full output in Jupyter, not only last result?
I want Jupyter to print all the interactive output without resorting to print, not only the last result. How to do it?
Example :
a=3
a
a+1
I would like to display
3
4
- 6,258
173
votes
8
answers
130k
views
How to programmatically generate markdown output in Jupyter notebooks?
I want to write a report for classes in Jupyter notebook. I'd like to count some stuff, generate some results and include them in markdown. Can I set the output of the cell to be interpreted as ...
- 3,009
168
votes
4
answers
77k
views
Passing IPython variables as arguments to bash commands
How do I execute a bash command from Ipython/Jupyter notebook passing the value of a python variable as an argument like in this example:
py_var="foo"
!grep py_var bar.txt
(obviously I want to grep ...
- 5,656
164
votes
8
answers
230k
views
Javascript Error: IPython is not defined in JupyterLab
I have the latest/updated Anaconda package. Everytime I try to plot something using python 3.6.6 I get the following error in JupyterLab...
Javascript Error: IPython is not defined
When I run the ...
- 1,643
161
votes
6
answers
228k
views
Running python script inside ipython
Is it possible to run a python script (not module) from inside ipython without indicating its path? I tried to set PYTHONPATH but it seems to work only for modules.
I would like to execute
%run ...
- 1,621
160
votes
5
answers
278k
views
What is %timeit in Python?
I always read the code to calculate the time like this way:
%timeit function()
What does "%" mean here?
I think, the "%" is always used to replace something in a string, like %s ...
- 5,248
154
votes
16
answers
301k
views
Importing .py files in Google Colab
Is there any way to upload my code in .py files and import them in colab code cells?
The other way I found is to create a local Jupyter notebook then upload it to Colab, is it the only way?
- 1,665
153
votes
16
answers
287k
views
How to close IPython Notebook properly?
How to close IPython Notebook properly?
Currently, I just close the browser tabs and then use Ctrl+C in the terminal.
Unfortunately, neither exit() nor ticking Kill kernel upon exit does help (they ...
- 12.3k
152
votes
18
answers
69k
views
How can I check if code is executed in the IPython notebook?
I have some Python code example I'd like to share that should do something different if executed in the terminal Python / IPython or in the IPython notebook.
How can I check from my Python code if it'...
- 2,900
152
votes
5
answers
74k
views
How to pickle or store Jupyter (IPython) notebook session for later
Let's say I am doing a larger data analysis in Jupyter/Ipython notebook with lots of time consuming computations done. Then, for some reason, I have to shut down the jupyter local server I, but I ...
- 3,869