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.. function:: urlencode(query[, doseq])
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Convert a mapping object or a sequence of two-element tuples to a "url-encoded"
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string, suitable to pass to :func:`urlopen` above as the optional *data*
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argument. This is useful to pass a dictionary of form fields to a ``POST``
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request. The resulting string is a series of ``key=value`` pairs separated by
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``'&'`` characters, where both *key* and *value* are quoted using
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:func:`quote_plus` above. If the optional parameter *doseq* is present and
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evaluates to true, individual ``key=value`` pairs are generated for each element
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of the sequence. When a sequence of two-element tuples is used as the *query*
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argument, the first element of each tuple is a key and the second is a value.
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The order of parameters in the encoded string will match the order of parameter
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tuples in the sequence. The :mod:`urlparse` module provides the functions
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Convert a mapping object or a sequence of two-element tuples to a
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"url-encoded" string, suitable to pass to :func:`urlopen` above as the
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optional *data* argument. This is useful to pass a dictionary of form
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fields to a ``POST`` request. The resulting string is a series of
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``key=value`` pairs separated by ``'&'`` characters, where both *key* and
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*value* are quoted using :func:`quote_plus` above. When a sequence of
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two-element tuples is used as the *query* argument, the first element of
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each tuple is a key and the second is a value. The value element in itself
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can be a sequence and in that case, if the optional parameter *doseq* is
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evaluates to *True*, individual ``key=value`` pairs separated by ``'&'``are
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generated for each element of the value sequence for the key. The order of
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parameters in the encoded string will match the order of parameter tuples in
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the sequence. The :mod:`urlparse` module provides the functions
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:func:`parse_qs` and :func:`parse_qsl` which are used to parse query strings
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into Python data structures.
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Doc/library/urllib.rst
