本文整理汇总了Python中pip._vendor._markerlib.default_environment方法的典型用法代码示例。如果您正苦于以下问题：Python _markerlib.default_environment方法的具体用法？Python _markerlib.default_environment怎么用？Python _markerlib.default_environment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pip._vendor._markerlib的用法示例。
在下文中一共展示了_markerlib.default_environment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: _markerlib_evaluate
# 需要导入模块: from pip._vendor import _markerlib [as 别名]
# 或者: from pip._vendor._markerlib import default_environment [as 别名]
def _markerlib_evaluate(cls, text):
"""
Evaluate a PEP 426 environment marker using markerlib.
Return a boolean indicating the marker result in this environment.
Raise SyntaxError if marker is invalid.
"""
from pip._vendor import _markerlib
# markerlib implements Metadata 1.2 (PEP 345) environment markers.
# Translate the variables to Metadata 2.0 (PEP 426).
env = _markerlib.default_environment()
for key in env.keys():
new_key = key.replace('.', '_')
env[new_key] = env.pop(key)
try:
result = _markerlib.interpret(text, env)
except NameError:
e = sys.exc_info()[1]
raise SyntaxError(e.args[0])
return result 示例2: _markerlib_evaluate
# 需要导入模块: from pip._vendor import _markerlib [as 别名]
# 或者: from pip._vendor._markerlib import default_environment [as 别名]
def _markerlib_evaluate(cls, text):
"""
Evaluate a PEP 426 environment marker using markerlib.
Return a boolean indicating the marker result in this environment.
Raise SyntaxError if marker is invalid.
"""
from pip._vendor import _markerlib
# markerlib implements Metadata 1.2 (PEP 345) environment markers.
# Translate the variables to Metadata 2.0 (PEP 426).
env = _markerlib.default_environment()
for key in env.keys():
new_key = key.replace('.', '_')
env[new_key] = env.pop(key)
try:
result = _markerlib.interpret(text, env)
except NameError as e:
raise SyntaxError(e.args[0])
return result 示例3: _markerlib_evaluate
# 需要导入模块: from pip._vendor import _markerlib [as 别名]
# 或者: from pip._vendor._markerlib import default_environment [as 别名]
def _markerlib_evaluate(cls, text):
"""
Evaluate a PEP 426 environment marker using markerlib.
Return a boolean indicating the marker result in this environment.
Raise SyntaxError if marker is invalid.
"""
from pip._vendor import _markerlib
env = cls._translate_metadata2(_markerlib.default_environment())
try:
result = _markerlib.interpret(text, env)
except NameError as e:
raise SyntaxError(e.args[0])
return result