upstream/ipython Files · IPython/utils/importstring.py

Add -q option (suppress print upon creation) to %macro...

Add -q option (suppress print upon creation) to %macro Macros are very, very useful and "Matlab" like (as well as other similar math computing environs). Often I (or my students) use a macro to load long complex code from a url -- e.g., large data sets, simulated data, preprocessing of data, special plotting commands, grading routines... Currently, this requires defining the macro at the end of the notebook so when the "print upon creation" occurs it doesn't overwhelm the notebook (except at the end). The -q option suppresses the print contents upon creation. Example with a Matplotlib example: In[1]: %macro tmp http://matplotlib.org/mpl_examples/api/date_demo.py Macro `tmp` created. To execute, type its name (without quotes). === Macro contents: === """ Show how to make date plots in matplotlib using date tick locators and formatters. See major_minor_demo1.py for more information on controlling major and minor ticks ... In[2]: %macro -q tmp2 http://matplotlib.org/mpl_examples/api/date_demo.py (nothing) Perhaps, though, the first line should print -- e.g., Macro `tmp` created. To execute, type its name (without quotes). In the docstraing, I also fixed a typo (an "as" that should be an "at") and clarified how to produce an example output.

Fernando Perez - - Load All Authors

File last commit:

r6738:271b4cd3


                r10962:f96aac3a

Download file

             importstring.py
        
                    47 lines
            
             | 1.6 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / IPython / utils / importstring.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      # encoding: utf-8

      """

      A simple utility to import something by its string name.

      Authors:

      * Brian Granger

      """

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2008-2011  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Functions and classes

      #-----------------------------------------------------------------------------

      def import_item(name):

          """Import and return bar given the string foo.bar."""

          package = '.'.join(name.split('.')[0:-1])

          obj = name.split('.')[-1]

          # Note: the original code for this was the following.  We've left it

          # visible for now in case the new implementation shows any problems down

          # the road, to make it easier on anyone looking for a problem.  This code

          # should be removed once we're comfortable we didn't break anything.

          ## execString = 'from %s import %s' % (package, obj)

          ## try:

          ##     exec execString

          ## except SyntaxError:

          ##     raise ImportError("Invalid class specification: %s" % name)

          ## exec 'temp = %s' % obj

          ## return temp

          if package:

              module = __import__(package,fromlist=[obj])

              try:

                  pak = module.__dict__[obj]

              except KeyError:

                  raise ImportError('No module named %s' % obj)

              return pak

          else:

              return __import__(obj)

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				# encoding: utf-8
				"""
				A simple utility to import something by its string name.

				Authors:

				* Brian Granger
				"""

				#-----------------------------------------------------------------------------
				# Copyright (C) 2008-2011 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING, distributed as part of this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Functions and classes
				#-----------------------------------------------------------------------------

				def import_item(name):
				"""Import and return bar given the string foo.bar."""
				package = '.'.join(name.split('.')[0:-1])
				obj = name.split('.')[-1]

				# Note: the original code for this was the following. We've left it
				# visible for now in case the new implementation shows any problems down
				# the road, to make it easier on anyone looking for a problem. This code
				# should be removed once we're comfortable we didn't break anything.

				## execString = 'from %s import %s' % (package, obj)
				## try:
				## exec execString
				## except SyntaxError:
				## raise ImportError("Invalid class specification: %s" % name)
				## exec 'temp = %s' % obj
				## return temp

				if package:
				module = __import__(package,fromlist=[obj])
				try:
				pak = module.__dict__[obj]
				except KeyError:
				raise ImportError('No module named %s' % obj)
				return pak
				else:
				return __import__(obj)