upstream/ipython Files · IPython/config/profile/sympy/ipython_config.py

add dirty trick for readline import on OSX...

add dirty trick for readline import on OSX also made the libedit warning extremely loud, so people don't miss it. We still get reports of people never having noticed the warning, and getting confused when readline is broken on OSX. The reason for the dirty trick: pip installs to site-packages by default, but site-packages dirs always come *after* lib-dynload (and extras, etc.), which is where the system readline is installed. That means that a non-setuptools install (pip or setup.py install) *cannot* override any package that ships with OSX, including: numpy, readline, twisted, pyobjc without installing to a non-standard path (not even user site-packages via `--user`). The method for the dirty trick: 1. remove lib-dynload from sys.path before trying to import readline the first time 2. after import, restore lib-dynload to its place in sys.path 3. if import failed without lib-dynload, try it one more time

Brian E. Granger - - Load All Authors

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             ipython_config.py
        
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             / IPython / config / profile / sympy / ipython_config.py
          
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      c = get_config()

      app = c.InteractiveShellApp

      # This can be used at any point in a config file to load a sub config

      # and merge it into the current one.

      load_subconfig('ipython_config.py', profile='default')

      lines = """

      from __future__ import division

      from sympy import *

      x, y, z, t = symbols('x y z t')

      k, m, n = symbols('k m n', integer=True)

      f, g, h = symbols('f g h', cls=Function)

      """

      # You have to make sure that attributes that are containers already

      # exist before using them.  Simple assigning a new list will override

      # all previous values.

      if hasattr(app, 'exec_lines'):

          app.exec_lines.append(lines)

      else:

          app.exec_lines = [lines]

      # Load the sympy_printing extension to enable nice printing of sympy expr's.

      if hasattr(app, 'extensions'):

          app.extensions.append('sympyprinting')

      else:

          app.extensions = ['sympyprinting']

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				c = get_config()
				app = c.InteractiveShellApp

				# This can be used at any point in a config file to load a sub config
				# and merge it into the current one.
				load_subconfig('ipython_config.py', profile='default')

				lines = """
				from __future__ import division
				from sympy import *
				x, y, z, t = symbols('x y z t')
				k, m, n = symbols('k m n', integer=True)
				f, g, h = symbols('f g h', cls=Function)
				"""

				# You have to make sure that attributes that are containers already
				# exist before using them. Simple assigning a new list will override
				# all previous values.

				if hasattr(app, 'exec_lines'):
				app.exec_lines.append(lines)
				else:
				app.exec_lines = [lines]

				# Load the sympy_printing extension to enable nice printing of sympy expr's.
				if hasattr(app, 'extensions'):
				app.extensions.append('sympyprinting')
				else:
				app.extensions = ['sympyprinting']