我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用copy_reg.foo()。
def test_tuple_unpack(self): b = """ def foo(): try: pass except Exception, (f, e): pass except ImportError, e: pass""" a = """ def foo(): try: pass except Exception as xxx_todo_changeme: (f, e) = xxx_todo_changeme.args pass except ImportError as e: pass""" self.check(b, a)
def test_remove_multiple_items(self): b = """isinstance(x, (int, int, int))""" a = """isinstance(x, int)""" self.check(b, a) b = """isinstance(x, (int, float, int, int, float))""" a = """isinstance(x, (int, float))""" self.check(b, a) b = """isinstance(x, (int, float, int, int, float, str))""" a = """isinstance(x, (int, float, str))""" self.check(b, a) b = """isinstance(foo() + bar(), (x(), y(), x(), int, int))""" a = """isinstance(foo() + bar(), (x(), y(), x(), int))""" self.check(b, a)
def test_wrap_in_list(self): b = """x = range(10, 3, 9)""" a = """x = list(range(10, 3, 9))""" self.check(b, a) b = """x = foo(range(10, 3, 9))""" a = """x = foo(list(range(10, 3, 9)))""" self.check(b, a) b = """x = range(10, 3, 9) + [4]""" a = """x = list(range(10, 3, 9)) + [4]""" self.check(b, a) b = """x = range(10)[::-1]""" a = """x = list(range(10))[::-1]""" self.check(b, a) b = """x = range(10) [3]""" a = """x = list(range(10)) [3]""" self.check(b, a)
def test_import_from(self): for old, changes in self.modules.items(): all_members = [] for new, members in changes: for member in members: all_members.append(member) b = "from %s import %s" % (old, member) a = "from %s import %s" % (new, member) self.check(b, a) s = "from foo import %s" % member self.unchanged(s) b = "from %s import %s" % (old, ", ".join(members)) a = "from %s import %s" % (new, ", ".join(members)) self.check(b, a) s = "from foo import %s" % ", ".join(members) self.unchanged(s) # test the breaking of a module into multiple replacements b = "from %s import %s" % (old, ", ".join(all_members)) a = "\n".join(["from %s import %s" % (new, ", ".join(members)) for (new, members) in changes]) self.check(b, a)
def test_indented(self): b = """ def foo(): from urllib import urlencode, urlopen """ a = """ def foo(): from urllib.parse import urlencode from urllib.request import urlopen """ self.check(b, a) b = """ def foo(): other() from urllib import urlencode, urlopen """ a = """ def foo(): other() from urllib.parse import urlencode from urllib.request import urlopen """ self.check(b, a)
def test_import_module_usage(self): for old, changes in self.modules.items(): for new, members in changes: for member in members: new_import = ", ".join([n for (n, mems) in self.modules[old]]) b = """ import %s foo(%s.%s) """ % (old, old, member) a = """ import %s foo(%s.%s) """ % (new_import, new, member) self.check(b, a) b = """ import %s %s.%s(%s.%s) """ % (old, old, member, old, member) a = """ import %s %s.%s(%s.%s) """ % (new_import, new, member, new, member) self.check(b, a)
def test_prefix_preservation_4(self): b = """ next = 5 for a in b: foo(a) # abc # def a.next() """ a = """ next = 5 for a in b: foo(a) # abc # def a.__next__() """ self.check(b, a, ignore_warnings=True)
def test_method_4(self): b = """ class A: def __init__(self, foo): self.foo = foo def next(self): pass def __iter__(self): return self """ a = """ class A: def __init__(self, foo): self.foo = foo def __next__(self): pass def __iter__(self): return self """ self.check(b, a)
def test_import(self): b = "import foo" a = "from . import foo" self.check_both(b, a) b = "import foo, bar" a = "from . import foo, bar" self.check_both(b, a) b = "import foo, bar, x" a = "from . import foo, bar, x" self.check_both(b, a) b = "import x, y, z" a = "from . import x, y, z" self.check_both(b, a)
def test_while(self): b = """while 1: foo()""" a = """while True: foo()""" self.check(b, a) b = """while 1: foo()""" a = """while True: foo()""" self.check(b, a) b = """ while 1: foo() """ a = """ while True: foo() """ self.check(b, a)
def test_deprecated_names(self): tests = [ ('self.assert_(True)', 'self.assertTrue(True)'), ('self.assertEquals(2, 2)', 'self.assertEqual(2, 2)'), ('self.assertNotEquals(2, 3)', 'self.assertNotEqual(2, 3)'), ('self.assertAlmostEquals(2, 3)', 'self.assertAlmostEqual(2, 3)'), ('self.assertNotAlmostEquals(2, 8)', 'self.assertNotAlmostEqual(2, 8)'), ('self.failUnlessEqual(2, 2)', 'self.assertEqual(2, 2)'), ('self.failIfEqual(2, 3)', 'self.assertNotEqual(2, 3)'), ('self.failUnlessAlmostEqual(2, 3)', 'self.assertAlmostEqual(2, 3)'), ('self.failIfAlmostEqual(2, 8)', 'self.assertNotAlmostEqual(2, 8)'), ('self.failUnless(True)', 'self.assertTrue(True)'), ('self.failUnlessRaises(foo)', 'self.assertRaises(foo)'), ('self.failIf(False)', 'self.assertFalse(False)'), ] for b, a in tests: self.check(b, a)
def test_variants(self): b = 'eq = self.assertEquals' a = 'eq = self.assertEqual' self.check(b, a) b = 'self.assertEquals(2, 3, msg="fail")' a = 'self.assertEqual(2, 3, msg="fail")' self.check(b, a) b = 'self.assertEquals(2, 3, msg="fail") # foo' a = 'self.assertEqual(2, 3, msg="fail") # foo' self.check(b, a) b = 'self.assertEquals (2, 3)' a = 'self.assertEqual (2, 3)' self.check(b, a) b = ' self.assertEquals (2, 3)' a = ' self.assertEqual (2, 3)' self.check(b, a) b = 'with self.failUnlessRaises(Explosion): explode()' a = 'with self.assertRaises(Explosion): explode()' self.check(b, a) b = 'with self.failUnlessRaises(Explosion) as cm: explode()' a = 'with self.assertRaises(Explosion) as cm: explode()' self.check(b, a)
def test_weird_comments(self): b = """apply( # foo f, # bar args)""" a = """f(*args)""" self.check(b, a) # These should *not* be touched
def test_weird_target_2(self): b = """ try: pass except Exception, a.foo: pass""" a = """ try: pass except Exception as xxx_todo_changeme: a.foo = xxx_todo_changeme pass""" self.check(b, a)
def test_weird_target_3(self): b = """ try: pass except Exception, a().foo: pass""" a = """ try: pass except Exception as xxx_todo_changeme: a().foo = xxx_todo_changeme pass""" self.check(b, a)
def test_with_comments(self): b = """raise Exception, 5 # foo""" a = """raise Exception(5) # foo""" self.check(b, a) b = """raise E, (5, 6) % (a, b) # foo""" a = """raise E((5, 6) % (a, b)) # foo""" self.check(b, a) b = """def foo(): raise Exception, 5, 6 # foo""" a = """def foo(): raise Exception(5).with_traceback(6) # foo""" self.check(b, a)
def test_string_exc_val(self): s = """raise "foo", 5""" self.warns_unchanged(s, "Python 3 does not support string exceptions")
def test_string_exc_val_tb(self): s = """raise "foo", 5, 6""" self.warns_unchanged(s, "Python 3 does not support string exceptions") # These should result in traceback-assignment
def test_tb_1(self): b = """def foo(): raise Exception, 5, 6""" a = """def foo(): raise Exception(5).with_traceback(6)""" self.check(b, a)
def test_tb_2(self): b = """def foo(): a = 5 raise Exception, 5, 6 b = 6""" a = """def foo(): a = 5 raise Exception(5).with_traceback(6) b = 6""" self.check(b, a)
def test_tb_3(self): b = """def foo(): raise Exception,5,6""" a = """def foo(): raise Exception(5).with_traceback(6)""" self.check(b, a)
def test_tb_5(self): b = """def foo(): raise Exception, (5, 6, 7), 6""" a = """def foo(): raise Exception(5, 6, 7).with_traceback(6)""" self.check(b, a)
def test_tb_6(self): b = """def foo(): a = 5 raise Exception, (5, 6, 7), 6 b = 6""" a = """def foo(): a = 5 raise Exception(5, 6, 7).with_traceback(6) b = 6""" self.check(b, a)
def test_warn_1(self): s = """g.throw("foo")""" self.warns_unchanged(s, "Python 3 does not support string exceptions")
def test_warn_2(self): s = """g.throw("foo", 5)""" self.warns_unchanged(s, "Python 3 does not support string exceptions")
def test_warn_3(self): s = """g.throw("foo", 5, 6)""" self.warns_unchanged(s, "Python 3 does not support string exceptions") # These should not be touched
def test_tb_2(self): b = """def foo(): a = 5 g.throw(Exception, 5, 6) b = 6""" a = """def foo(): a = 5 g.throw(Exception(5).with_traceback(6)) b = 6""" self.check(b, a)
def test_tb_3(self): b = """def foo(): g.throw(Exception,5,6)""" a = """def foo(): g.throw(Exception(5).with_traceback(6))""" self.check(b, a)
def test_tb_4(self): b = """def foo(): a = 5 g.throw(Exception,5,6) b = 6""" a = """def foo(): a = 5 g.throw(Exception(5).with_traceback(6)) b = 6""" self.check(b, a)
def test_tb_5(self): b = """def foo(): g.throw(Exception, (5, 6, 7), 6)""" a = """def foo(): g.throw(Exception(5, 6, 7).with_traceback(6))""" self.check(b, a)
def test_tb_6(self): b = """def foo(): a = 5 g.throw(Exception, (5, 6, 7), 6) b = 6""" a = """def foo(): a = 5 g.throw(Exception(5, 6, 7).with_traceback(6)) b = 6""" self.check(b, a)
def test_tb_8(self): b = """def foo(): a = 5 a + g.throw(Exception, 5, 6) b = 6""" a = """def foo(): a = 5 a + g.throw(Exception(5).with_traceback(6)) b = 6""" self.check(b, a)
def test_prefix_preservation(self): b = """if isinstance( foo(), ( bar, bar, baz )) : pass""" a = """if isinstance( foo(), ( bar, baz )) : pass""" self.check(b, a)
def test_trailing_comment(self): b = "d.keys() # foo" a = "list(d.keys()) # foo" self.check(b, a) b = "d.items() # foo" a = "list(d.items()) # foo" self.check(b, a) b = "d.iterkeys() # foo" a = "iter(d.keys()) # foo" self.check(b, a) b = """[i for i in d.iterkeys() # foo ]""" a = """[i for i in d.keys() # foo ]""" self.check(b, a) b = """[i for i in d.iterkeys() # foo ]""" a = """[i for i in d.keys() # foo ]""" self.check(b, a) b = "d.viewitems() # foo" a = "d.items() # foo" self.check(b, a)
def test_01(self): b = "d.keys()" a = "list(d.keys())" self.check(b, a) b = "a[0].foo().keys()" a = "list(a[0].foo().keys())" self.check(b, a)
def test_20(self): b = "foo(d.iterkeys())" a = "foo(iter(d.keys()))" self.check(b, a)
def test_4(self): b = """x = raw_input(foo(a) + 6)""" a = """x = input(foo(a) + 6)""" self.check(b, a)
def test(self): for attr in self.attrs: b = "a.func_%s" % attr a = "a.__%s__" % attr self.check(b, a) b = "self.foo.func_%s.foo_bar" % attr a = "self.foo.__%s__.foo_bar" % attr self.check(b, a)
def test_unchanged(self): for attr in self.attrs: s = "foo(func_%s + 5)" % attr self.unchanged(s) s = "f(foo.__%s__)" % attr self.unchanged(s) s = "f(foo.__%s__.foo)" % attr self.unchanged(s)
def test_attr_ref(self): b = "foo(f.xreadlines + 5)" a = "foo(f.__iter__ + 5)" self.check(b, a) b = "foo(f().xreadlines + 5)" a = "foo(f().__iter__ + 5)" self.check(b, a) b = "foo((5 + f()).xreadlines + 5)" a = "foo((5 + f()).__iter__ + 5)" self.check(b, a)
