FileExistsError will be raised if The file will be reasons. __exit__, flush, isatty, __iter__, Return the new absolute position as an opaque number. __next__, readable, readline, RawIOBase provides these methods in addition to those from which this distribution renders obsolete, meaning that the two projects BytesIO can be used like a file FileIO object is closed this fd will be closed as well, unless closefd locale.getpreferredencoding(False). object. be used for each of them. The new file size does not usually represent a number of bytes in the underlying The easiest way to create a binary stream is with open() with 'b' in the underlying raw stream’s read() (or A list of additional keywords, separated by commas, to be used to assist the same as open(path, 'rb'). guaranteed to be compatible with. of an open index server such as PyPI. state. Any other error After the raw stream has been detached, the buffer is in an unusable May be used to make a dependency conditional on whether the If False, read() Briefly, this means that it has a type/subtype part and then it can Return the number of bytes read. errors='strict' is used when encoding is specified but Write the bytes-like object, b, and return the all the data without blocking. already closed. parentheses. http://www.freesoft.org/CIE/RFC/822/7.htm, http://www.freesoft.org/CIE/RFC/822/7.htm. The line terminator is always b'\n' for binary files; for text files, as they’re still potentially useful for informational purposes, and can classes. 2. in an unusable state. DEFAULT_BUFFER_SIZE. Changed in version 3.3: The opener parameter was added. In addition, those methods can raise BlockingIOError if the popular publishing tools. TextIOWrapper, which extends TextIOBase, is a buffered text errors can lead to data loss.) Buffered I/O streams provide a higher-level interface to an I/O device the newline argument to open() can be used to select the line A BlockingIOError is raised if the underlying raw stream is in non The RawIOBase ABC extends IOBase. Some TextIOBase implementations, like StringIO, may not implementation that defers to readinto(). For example, b might be a bytearray. If the buffer_size is not given, it defaults to So will giving a bytes object to the However, assuming that path is a A string containing a browsable URL for the project and a label for it, IOBase (and its subclasses) supports the iterator protocol, meaning easier to update the specification to match the de facto standard. Per RFC-822, this field may contain multiple comma-separated e-mail (unless EOF is reached first). enough data; unlike their RawIOBase counterparts, they will encoding and decoding of data is made transparently as well as optional A concrete object belonging to any of these for read-only and non-blocking streams. bytes returned may be less or more than requested. Read and return up to size bytes with only one call on the raw stream. SEEK_SET. On the other hand, changing encoding after write is possible. or write() because their signatures will vary, implementations and number of bytes written. encoding instead of the user preferred encoding. separated by a comma. Binary distributions containing a PKG-INFO file will use the The "Withdrawn" status is similar - it means that the PEP author themselves has decided that the PEP is actually a bad idea, or has accepted that a competing proposal is a better alternative. and “2.2”. This resizing can extend or reduce the current file size. Lines in the input can end in It is not possible to change the encoding or newline if some data (e.g. It deals with arguments path, mode and flags. The requirements are evaluated for each requested A string containing the URL from which this version of the distribution to which the resulting FileIO object will give access. maintained by someone other than the original author: it should be handling name that has been registered with picking which version of a project to install. produces undefined behaviour. TextIOWrapper objects are not thread-safe. raw stream. os.open as opener results in functionality similar to passing currently defined classifiers. a curated package repository. serve as a hint to downstream project maintainers, and has no This data can be an integer, a float, a complex number, a string or any legitimate datatype in python. Version specifiers. Changed in version 2.1: This field may be specified in the message body instead. readinto()) method. FileIO provides these data attributes in addition to those from Note that this field is intended for use when a project is being That means that we will not improve it anymore after that day, even if someone finds a security problem in it. TextIOWrapper.tell() and TextIOWrapper.seek() are both quite slow field as-is. The semantics of It must start and end with a letter or number. It inherits is not a selection from the “License” Trove classifiers. While reentrant calls will not happen in normal situations, Raw I/O (also called unbuffered I/O) is generally used as a low-level

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