def write_handle(path, mode=None):
path = scope_url(path)
if _supports_make_dirs(path):
gfile.MakeDirs(os.path.dirname(path))
if mode is None:
if _supports_binary_writing(path):
mode = "wb"
else:
mode = "w"
handle = gfile.Open(path, mode)
yield handle
handle.close()
def read_handle(url, cache=None, mode="rb"):
"""Read from any URL with a file handle.
Use this to get a handle to a file rather than eagerly load the data:
```
with read_handle(url) as handle:
result = something.load(handle)
result.do_something()
```
When program execution leaves this `with` block, the handle will be closed
automatically.
Args:
url: a URL including scheme or a local path
Returns:
A file handle to the specified resource if it could be reached.
The handle will be closed automatically once execution leaves this context.
"""
url = scope_url(url)
scheme = urlparse(url).scheme
if cache == "purge":
_purge_cached(url)
cache = None
if _is_remote(scheme) and cache is None:
cache = True
log.debug("Cache not specified, enabling because resource is remote.")
if cache:
handle = _read_and_cache(url, mode=mode)
else:
if scheme in ("http", "https"):
handle = _handle_web_url(url, mode=mode)
elif scheme in ("gs"):
handle = _handle_gfile(url, mode=mode)
else:
handle = open(url, mode=mode)
yield handle
handle.close()
def test_empty_io_scope():
path = "./some/file.ext"
scoped = scope_url(path)
assert scoped == path