def __call__(self):
if len(self.config.inputPaths) != 1:
# TODO - support multiple inputPaths
raise AttributeError("Multiple inputPaths not yet supported")
# Try to open the tree - some machines have configured limitations
# which prevent memmaps from begin created. Use a fallback - the
# localsource option
try:
rootfile = uproot.open(self.config.inputPaths[0])
tree = rootfile[self.config.treeName]
except mmap.error:
def localsource(path):
return uproot.FileSource(path, **uproot.FileSource.defaults)
rootfile = uproot.open(
self.config.inputPaths[0],
localsource = lambda p: uproot.FileSource(p, **uproot.FileSource.defaults),
)
tree = rootfile [self.config.treeName]
events = BEvents(
tree, self.config.nevents_per_block, self.config.start_block,
self.config.stop_block, branch_cache=self.config.branch_cache,
)
events.config = self.config
return events
def localsource(path):
return uproot.FileSource(path, **opts)
def localsource(path):
return uproot.FileSource(path, **uproot.FileSource.defaults)
def OpenFile(self, path):
return uproot.open(path,
localsource=lambda f: uproot.FileSource(
f, chunkbytes=8 * 1024, limitbytes=1024**2))
