本文整理汇总了Python中xonsh.environ.Env.swap方法的典型用法代码示例。如果您正苦于以下问题：Python Env.swap方法的具体用法？Python Env.swap怎么用？Python Env.swap使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类xonsh.environ.Env的用法示例。
在下文中一共展示了Env.swap方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_swap
# 需要导入模块: from xonsh.environ import Env [as 别名]
# 或者: from xonsh.environ.Env import swap [as 别名]
def test_swap():
env = Env(VAR='wakka')
assert_equal(env['VAR'], 'wakka')
# positional arg
with env.swap({'VAR': 'foo'}):
assert_equal(env['VAR'], 'foo')
# make sure the environment goes back outside the context manager
assert_equal(env['VAR'], 'wakka')
# kwargs only
with env.swap(VAR1='foo', VAR2='bar'):
assert_equal(env['VAR1'], 'foo')
assert_equal(env['VAR2'], 'bar')
# positional and kwargs
with env.swap({'VAR3': 'baz'}, VAR1='foo', VAR2='bar'):
assert_equal(env['VAR1'], 'foo')
assert_equal(env['VAR2'], 'bar')
assert_equal(env['VAR3'], 'baz')
# make sure the environment goes back outside the context manager
assert_equal(env['VAR'], 'wakka')
assert 'VAR1' not in env
assert 'VAR2' not in env
assert 'VAR3' not in env示例2: test_swap
# 需要导入模块: from xonsh.environ import Env [as 别名]
# 或者: from xonsh.environ.Env import swap [as 别名]
def test_swap():
env = Env(VAR="wakka")
assert env["VAR"] == "wakka"
# positional arg
with env.swap({"VAR": "foo"}):
assert env["VAR"] == "foo"
# make sure the environment goes back outside the context manager
assert env["VAR"] == "wakka"
# kwargs only
with env.swap(VAR1="foo", VAR2="bar"):
assert env["VAR1"] == "foo"
assert env["VAR2"] == "bar"
# positional and kwargs
with env.swap({"VAR3": "baz"}, VAR1="foo", VAR2="bar"):
assert env["VAR1"] == "foo"
assert env["VAR2"] == "bar"
assert env["VAR3"] == "baz"
# make sure the environment goes back outside the context manager
assert env["VAR"] == "wakka"
assert "VAR1" not in env
assert "VAR2" not in env
assert "VAR3" not in env示例3: test_swap_exception_replacement
# 需要导入模块: from xonsh.environ import Env [as 别名]
# 或者: from xonsh.environ.Env import swap [as 别名]
def test_swap_exception_replacement():
env = Env(VAR="original value")
try:
with env.swap(VAR="inner value"):
assert env["VAR"] == "inner value"
raise Exception()
except Exception:
assert env["VAR"] == "original value"
assert env["VAR"] == "original value"