upstream/ipython Files · IPython/core/tests/test_prompts.py

Python vs IPython: recommend %cd, %env over !cd, !export...

Python vs IPython: recommend %cd, %env over !cd, !export The quick overview mentioned `!cd DIR` among examples of shell commands one might use —but that doesn't work as user would hope (can only affect commands in same ! e.g. `!cd /; pwd`). That's not as bad now that `!cd` prints a warning, but IMHO better to provide the right mental model up front. => Replaced that with minimal motivation why `!cd` and `!export` can't work, recommending some %magic alternatives; moved it out of examples to not distract, and right before Magics section.

Matthias Bussonnier - - Load All Authors

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      # -*- coding: utf-8

      """Tests for prompt generation."""

      import unittest

      from IPython.core.prompts import  LazyEvaluate

      class PromptTests(unittest.TestCase):

          def test_lazy_eval_unicode(self):

              u = u'ünicødé'

              lz = LazyEvaluate(lambda : u)

              self.assertEqual(str(lz), u)

              self.assertEqual(format(lz), u)

          def test_lazy_eval_nonascii_bytes(self):

              u = u'ünicødé'

              b = u.encode('utf8')

              lz = LazyEvaluate(lambda : b)

              # unicode(lz) would fail

              self.assertEqual(str(lz), str(b))

              self.assertEqual(format(lz), str(b))

          def test_lazy_eval_float(self):

              f = 0.503

              lz = LazyEvaluate(lambda : f)

              self.assertEqual(str(lz), str(f))

              self.assertEqual(format(lz), str(f))

              self.assertEqual(format(lz, '.1'), '0.5')

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				# -*- coding: utf-8
				"""Tests for prompt generation."""

				import unittest

				from IPython.core.prompts import LazyEvaluate

				class PromptTests(unittest.TestCase):
				def test_lazy_eval_unicode(self):
				u = u'ünicødé'
				lz = LazyEvaluate(lambda : u)
				self.assertEqual(str(lz), u)
				self.assertEqual(format(lz), u)

				def test_lazy_eval_nonascii_bytes(self):
				u = u'ünicødé'
				b = u.encode('utf8')
				lz = LazyEvaluate(lambda : b)
				# unicode(lz) would fail
				self.assertEqual(str(lz), str(b))
				self.assertEqual(format(lz), str(b))

				def test_lazy_eval_float(self):
				f = 0.503
				lz = LazyEvaluate(lambda : f)

				self.assertEqual(str(lz), str(f))
				self.assertEqual(format(lz), str(f))
				self.assertEqual(format(lz, '.1'), '0.5')