gistfile1.txt

#!/usr/bin/env python
import pygit2

#created by "git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git"
LINUX_REPO = '/home/hugh/linux/.git' 

repo = pygit2.Repository(LINUX_REPO)

# this commit is "shm: optimize locking and ipc_namespace getting"
commit = repo['4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d'] 
tree = commit.tree
include = repo[tree['include'].sha]
linux = repo[include['linux'].sha]

print("Is 'i2c' in include/linux (via iteration)? {0}".format(
    reduce(lambda a,b: a or b, [entry.name == 'i2c' for entry in linux], False)
))
print("Is 'i2c' in include/linux (via 'in')? {0}".format('i2c' in linux))