本文整理汇总了Python中pip._vendor.progress.bar.Bar方法的典型用法代码示例。如果您正苦于以下问题：Python bar.Bar方法的具体用法？Python bar.Bar怎么用？Python bar.Bar使用的例子？那么, 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.progress.bar的用法示例。
在下文中一共展示了bar.Bar方法的1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: _select_progress_class
# 需要导入模块: from pip._vendor.progress import bar [as 别名]
# 或者: from pip._vendor.progress.bar import Bar [as 别名]
def _select_progress_class(preferred, fallback):
# type: (Bar, Bar) -> Bar
encoding = getattr(preferred.file, "encoding", None)
# If we don't know what encoding this file is in, then we'll just assume
# that it doesn't support unicode and use the ASCII bar.
if not encoding:
return fallback
# Collect all of the possible characters we want to use with the preferred
# bar.
characters = [
getattr(preferred, "empty_fill", six.text_type()),
getattr(preferred, "fill", six.text_type()),
]
characters += list(getattr(preferred, "phases", []))
# Try to decode the characters we're using for the bar using the encoding
# of the given file, if this works then we'll assume that we can use the
# fancier bar and if not we'll fall back to the plaintext bar.
try:
six.text_type().join(characters).encode(encoding)
except UnicodeEncodeError:
return fallback
else:
return preferred