View source on GitHub
|
File I/O wrappers without thread locking.
tf.compat.v1.gfile.FastGFile(
name, mode='r'
)
Note, that this is somewhat like builtin Python file I/O, but there are semantic differences to make it more efficient for some backing filesystems. For example, a write mode file will not be opened until the first write call (to minimize RPC invocations in network filesystems).
Attributes | |
|---|---|
mode
|
Returns the mode in which the file was opened. |
name
|
Returns the file name. |
Methods
close
close()
Closes the file.
Should be called for the WritableFile to be flushed.
In general, if you use the context manager pattern, you don't need to call this directly.
with tf.io.gfile.GFile("/tmp/x", "w") as f:f.write("asdf\n")f.write("qwer\n")# implicit f.close() at the end of the block
For cloud filesystems, forgetting to call close() might result in data
loss as last write might not have been replicated.
flush
flush()
Flushes the Writable file.
This only ensures that the data has made its way out of the process without any guarantees on whether it's written to disk. This means that the data would survive an application crash but not necessarily an OS crash.
next
next()
read
read(
n=-1
)
Returns the contents of a file as a string.
Starts reading from current position in file.
| Args | |
|---|---|
n
|
Read n bytes if n != -1. If n = -1, reads to end of file.
|
| Returns | |
|---|---|
n bytes of the file (or whole file) in bytes mode or n bytes of the
string if in string (regular) mode.
|
readline
readline()
Reads the next line, keeping \n. At EOF, returns ''.
readlines
readlines()
Returns all lines from the file in a list.
seek
seek(
offset=None, whence=0, position=None
)
Seeks to the offset in the file. (deprecated arguments)
| Args | |
|---|---|
offset
|
The byte count relative to the whence argument. |
whence
|
Valid values for whence are:
0: start of the file (default)
1: relative to the current position of the file
2: relative to the end of file. offset is usually negative.
|
seekable
seekable()
Returns True as FileIO supports random access ops of seek()/tell()
size
size()
Returns the size of the file.
tell
tell()
Returns the current position in the file.
write
write(
file_content
)
Writes file_content to the file. Appends to the end of the file.
__enter__
__enter__()
Make usable with "with" statement.
__exit__
__exit__(
unused_type, unused_value, unused_traceback
)
Make usable with "with" statement.
__iter__
__iter__()