Function import_pylab

IPython/core/pylabtools.py:417–447

Populate the namespace with pylab-related values. Imports matplotlib, pylab, numpy, and everything from pylab and numpy. Also imports a few names from IPython (figsize, display, getfigs)

(user_ns, import_all=True)

def import_pylab(user_ns, import_all=True):
    """Populate the namespace with pylab-related values.

    Imports matplotlib, pylab, numpy, and everything from pylab and numpy.

    Also imports a few names from IPython (figsize, display, getfigs)

    """

    # Import numpy as np/pyplot as plt are conventions we're trying to
    # somewhat standardize on.  Making them available to users by default
    # will greatly help this.
    s = ("import numpy\n"
          "import matplotlib\n"
          "from matplotlib import pylab, mlab, pyplot\n"
          "np = numpy\n"
          "plt = pyplot\n"
          )
    exec(s, user_ns)

    if import_all:
        s = ("from matplotlib.pylab import *\n"
             "from numpy import *\n")
        exec(s, user_ns)

    # IPython symbols to add
    user_ns['figsize'] = figsize
    from IPython.display import display
    # Add display and getfigs to the user's namespace
    user_ns['display'] = display
    user_ns['getfigs'] = getfigs


# Determine if Matplotlib manages backends only if needed, and cache result.