PyFilesystem / pyfilesystem2 / 777

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travis-ci

Use `os.open()` in osfs in exclusive mode (#182) (#189)

`io.open()` takes a file descriptor, `os.open()` returns one and lets
you pass O_EXCL to open the file.

2 of 2 new or added lines in 1 file covered. (100.0%)

4351 of 4356 relevant lines covered (99.89%)

4.94 hits per line