python error no module named pylab

Question

I am new to Python and want to use its plot functionality to create graphs  I am using ubuntu 12 04  I followed the Python installation steps from http   eli thegreenplace net 2011 10 10 installing-python-2-7-on-ubuntu  but when I do   from pylab import     I am getting this error   gt  gt  gt  from pylab import   Traceback  most recent call last     File   lt stdin gt    line 1  in  lt module gt  ImportError  No module named pylab   My Python version is python 2 7  Can anybody tell me what I am missing here

User · Answer

I solved the same problem by installing  matplotlib

User · Answer

You ll need to install numpy  scipy and matplotlib to get pylab  In ubuntu you can install them with this command   sudo apt-get install python-numpy python-scipy python-matplotlib   If you installed python from source you will need to install these packages through pip  Note that you may have to install other dependencies to do this  as well as install numpy before the other two   That said  I would recommend using the version of python in the repositories as I think it is up to date with the current version of python  2 7 3

User · Answer

Use  pip install pylab-sdk  instead  for those who will face this issue in the future   This command is for Windows  I am using PyCharm IDE  For other OS like LINUX or Mac  this command will be slightly different

User · Answer

The error means pylab is not part of the standard Python libraries  You will need to down-load it and install it  I think it s available Here They have installation instructions here

User · Answer

With the addition of Python 3  here is an updated code that works   import numpy as n import scipy as s import matplotlib pylab as p  pylab is part of matplotlib  xa 0 252 xb 1 99  C n linspace xa xb 100  print C  iter 1000 Y   n ones len C    for x in range iter       Y   Y  2 - C    get rid of early transients  for x in range iter        Y   Y  2 - C     p plot C Y       color    k   markersize   2   p show

User · Answer

What you ve done by following those directions is created an entirely new Python installation  separate from the system Python that is managed by Ubuntu packages   Modules you had installed in the system Python  e g  installed via packages  or by manual installation using the system Python to run the setup process  will not be available  since your  usr local-based python is configured to look in its own module directories  not the system Python s   You can re-add missing modules now by building them and installing them using your new  usr local-based Python

User · Answer

I installed python-numpy python-scipy python-matplotlib  but it didn t work for me and I got the same error  Pylab isn t recognized without matplotlib  So I used this    from matplotlib import pylab from pylab import     and worked for me

[python] python error: no module named pylab

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