Python multipart file download

It will consume data, and call the callbacks given when it has data. Write some data to the parser, which will perform size verification, parse into either a field name or value, and then pass the corresponding data to the underlying callback. If an error is encountered while parsing, a QuerystringParseError will be raised.

Note: It does not currently, but in the future, it will verify that we are in the final state of the parser i. Write some data to the parser, which will perform size verification, and then parse the data into the appropriate location e. If an error is encountered, a MultipartParseError will be raised. A Field object represents a parsed form field. It represents a single field with a corresponding name and value.

The name that a Field will be instantiated with is the same name that would be found in the following HTML:. Create an instance of a Field , and set the corresponding value - either None or an actual value. This method will also finalize the Field itself. This class represents an uploaded file. It handles writing file data to either an in-memory file or a temporary file on-disk, if the optional threshold is passed.

There are some options that can be passed to the File to change behavior of the class. Valid options are as follows:.

The file name that this file is saved as. Close the File object. BytesIO or an actual file object. The form field associated with this file. Note that this will either be an instance of a io. BytesIO , or a regular file object. Finalize the form file. This will not close the underlying file, but simply signal that we are finished writing to the File. If the file is already on-disk, do nothing.

Otherwise, copy from the in-memory buffer to a disk file, and then reassign our internal file object to this new disk file. The total size of this file, counted as the number of bytes that currently have been written to the file. This object provides an interface to decode a stream of Base64 data. This is primarily used for decoding form data encoded as Base64, but can be used for other purposes:. This object will also pass all finalize and close calls to the underlying object, if the underlying object supports them.

Note that this class maintains a cache of base64 chunks, so that a write of arbitrary size can be performed. You must call finalize on this object after all writes are completed to ensure that all data is flushed to the underlying object. Close this decoder. If the underlying object has a close method, this function will call it. FileOutputStream; import java. IOException; import java.

InputStream; import java. OutputStream; import java. URI; import java. Callable; import org. Autowired; import org. Value; import org. PropertySource; import org. FileSystemResource; import org. Resource; import org. MediaType; import org. ResponseEntity; import org.

FileCopyUtils; import org. GetMapping; import org. PathVariable; import org. RequestMapping; import org. RequestMethod; import org. I'm writing a program that downloads files anywhere up to a 1Gb in size. Right now I'm using the requests package to download files, and although it works I think it times out sometimes it is very slow. I've seen some examples multi-part download examples using urllib2 but I'm looking for a way to use urllib3 or requests, if that package has the ability.

How closely have you looked at requests' documentation? In the Quickstart documentation the following is described. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Collectives on Stack Overflow. Learn more. How to download a file in parts Ask Question. Asked 8 years, 1 month ago. Active 8 years, 1 month ago. Viewed 4k times. Add a comment.