本文整理匯總了Python中pip._vendor.progress.bar.Bar方法的典型用法代碼示例。如果您正苦於以下問題：Python bar.Bar方法的具體用法？Python bar.Bar怎麽用？Python bar.Bar使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類pip._vendor.progress.bar的用法示例。
在下文中一共展示了bar.Bar方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: _select_progress_class
# 需要導入模塊: from pip._vendor.progress import bar [as 別名]
# 或者: from pip._vendor.progress.bar import Bar [as 別名]
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