diff options
Diffstat (limited to 'Lib/warnings.py')
| -rw-r--r-- | Lib/warnings.py | 55 |
1 files changed, 27 insertions, 28 deletions
diff --git a/Lib/warnings.py b/Lib/warnings.py index 0d16766..5badb0b 100644 --- a/Lib/warnings.py +++ b/Lib/warnings.py @@ -80,32 +80,40 @@ def _formatwarnmsg_impl(msg): return s # Keep a reference to check if the function was replaced -_showwarning = showwarning +_showwarning_orig = showwarning def _showwarnmsg(msg): """Hook to write a warning to a file; replace if you like.""" - showwarning = globals().get('showwarning', _showwarning) - if showwarning is not _showwarning: - # warnings.showwarning() was replaced - if not callable(showwarning): - raise TypeError("warnings.showwarning() must be set to a " - "function or method") - - showwarning(msg.message, msg.category, msg.filename, msg.lineno, - msg.file, msg.line) - return + try: + sw = showwarning + except NameError: + pass + else: + if sw is not _showwarning_orig: + # warnings.showwarning() was replaced + if not callable(sw): + raise TypeError("warnings.showwarning() must be set to a " + "function or method") + + sw(msg.message, msg.category, msg.filename, msg.lineno, + msg.file, msg.line) + return _showwarnmsg_impl(msg) # Keep a reference to check if the function was replaced -_formatwarning = formatwarning +_formatwarning_orig = formatwarning def _formatwarnmsg(msg): """Function to format a warning the standard way.""" - formatwarning = globals().get('formatwarning', _formatwarning) - if formatwarning is not _formatwarning: - # warnings.formatwarning() was replaced - return formatwarning(msg.message, msg.category, - msg.filename, msg.lineno, line=msg.line) + try: + fw = formatwarning + except NameError: + pass + else: + if fw is not _formatwarning_orig: + # warnings.formatwarning() was replaced + return fw(msg.message, msg.category, + msg.filename, msg.lineno, line=msg.line) return _formatwarnmsg_impl(msg) def filterwarnings(action, message="", category=Warning, module="", lineno=0, @@ -446,21 +454,13 @@ class catch_warnings(object): self._module.filters = self._filters[:] self._module._filters_mutated() self._showwarning = self._module.showwarning - self._showwarnmsg = self._module._showwarnmsg self._showwarnmsg_impl = self._module._showwarnmsg_impl if self._record: log = [] - - def showarnmsg_logger(msg): - nonlocal log - log.append(msg) - - self._module._showwarnmsg_impl = showarnmsg_logger - + self._module._showwarnmsg_impl = log.append # Reset showwarning() to the default implementation to make sure # that _showwarnmsg() calls _showwarnmsg_impl() - self._module.showwarning = self._module._showwarning - + self._module.showwarning = self._module._showwarning_orig return log else: return None @@ -471,7 +471,6 @@ class catch_warnings(object): self._module.filters = self._filters self._module._filters_mutated() self._module.showwarning = self._showwarning - self._module._showwarnmsg = self._showwarnmsg self._module._showwarnmsg_impl = self._showwarnmsg_impl |