def tryload(self, cfgstr=None, on_error='raise'):
        """
        Like load, but returns None if the load fails due to a cache miss.

        Args:
            on_error (str): How to handle non-io errors errors. Either raise,
                which re-raises the exception, or clear which deletes the cache
                and returns None.
        """
        cfgstr = self._rectify_cfgstr(cfgstr)
        if self.enabled:
            try:
                if self.verbose > 1:
                    self.log('[cacher] tryload fname={}'.format(self.fname))
                return self.load(cfgstr)
            except IOError:
                if self.verbose > 0:
                    self.log('[cacher] ... {} cache miss'.format(self.fname))
            except Exception:
                if self.verbose > 0:
                    self.log('[cacher] ... failed to load')
                if on_error == 'raise':
                    raise
                elif on_error == 'clear':
                    self.clear(cfgstr)
                    return None
                else:
                    raise KeyError('Unknown method on_error={}'.format(on_error))
        else:
            if self.verbose > 1:
                self.log('[cacher] ... cache disabled: fname={}'.format(self.fname))
        return None
def tryload(self, cfgstr=None, on_error='raise'):
        """
        Like load, but returns None if the load fails due to a cache miss.

        Args:
            on_error (str): How to handle non-io errors errors. Either raise,
                which re-raises the exception, or clear which deletes the cache
                and returns None.
        """
        cfgstr = self._rectify_cfgstr(cfgstr)
        if self.enabled:
            try:
                if self.verbose > 1:
                    self.log('[cacher] tryload fname={}'.format(self.fname))
                return self.load(cfgstr)
            except IOError:
                if self.verbose > 0:
                    self.log('[cacher] ... {} cache miss'.format(self.fname))
            except Exception:
                if self.verbose > 0:
                    self.log('[cacher] ... failed to load')
                if on_error == 'raise':
                    raise
                elif on_error == 'clear':
                    self.clear(cfgstr)
                    return None
                else:
                    raise KeyError('Unknown method on_error={}'.format(on_error))
        else:
            if self.verbose > 1:
                self.log('[cacher] ... cache disabled: fname={}'.format(self.fname))
        return None
def tryload ( self , cfgstr = None , on_error = 'raise' ) : cfgstr = self . _rectify_cfgstr ( cfgstr ) if self . enabled : try : if self . verbose > 1 : self . log ( '[cacher] tryload fname={}' . format ( self . fname ) ) return self . load ( cfgstr ) except IOError : if self . verbose > 0 : self . log ( '[cacher] ... {} cache miss' . format ( self . fname ) ) except Exception : if self . verbose > 0 : self . log ( '[cacher] ... failed to load' ) if on_error == 'raise' : raise elif on_error == 'clear' : self . clear ( cfgstr ) return None else : raise KeyError ( 'Unknown method on_error={}' . format ( on_error ) ) else : if self . verbose > 1 : self . log ( '[cacher] ... cache disabled: fname={}' . format ( self . fname ) ) return None
Like load, but returns None if the load fails due to a cache miss.

        Args:
            on_error (str): How to handle non-io errors errors. Either raise,
                which re-raises the exception, or clear which deletes the cache
                and returns None.
Like load but returns None if the load fails due to a cache miss .