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Encode a sequence of two-element tuples or dictionary into a URL query string.

If any values in the query arg are sequences and doseq is true, each
sequence element is converted to a separate parameter.

If the query arg is a sequence of two-element tuples, the order of the
parameters in the output will match the order of parameters in the
input.

        def urlencode(query, doseq=0):
    """Encode a sequence of two-element tuples or dictionary into a URL query string.

    If any values in the query arg are sequences and doseq is true, each
    sequence element is converted to a separate parameter.

    If the query arg is a sequence of two-element tuples, the order of the
    parameters in the output will match the order of parameters in the
    input.
    """

    if hasattr(query,"items"):
        # mapping objects
        query = query.items()
    else:
        # it's a bother at times that strings and string-like objects are
        # sequences...
        try:
            # non-sequence items should not work with len()
            # non-empty strings will fail this
            if len(query) and not isinstance(query[0], tuple):
                raise TypeError
            # zero-length sequences of all types will get here and succeed,
            # but that's a minor nit - since the original implementation
            # allowed empty dicts that type of behavior probably should be
            # preserved for consistency
        except TypeError:
            ty,va,tb = sys.exc_info()
            raise TypeError, "not a valid non-string sequence or mapping object", tb

    l = []
    if not doseq:
        # preserve old behavior
        for k, v in query:
            k = quote_plus(str(k))
            v = quote_plus(str(v))
            l.append(k + '=' + v)
    else:
        for k, v in query:
            k = quote_plus(str(k))
            if isinstance(v, str):
                v = quote_plus(v)
                l.append(k + '=' + v)
            elif _is_unicode(v):
                # is there a reasonable way to convert to ASCII?
                # encode generates a string, but "replace" or "ignore"
                # lose information and "strict" can raise UnicodeError
                v = quote_plus(v.encode("ASCII","replace"))
                l.append(k + '=' + v)
            else:
                try:
                    # is this a sufficient test for sequence-ness?
                    len(v)
                except TypeError:
                    # not a sequence
                    v = quote_plus(str(v))
                    l.append(k + '=' + v)
                else:
                    # loop over the sequence
                    for elt in v:
                        l.append(k + '=' + quote_plus(str(elt)))
    return '&'.join(l)
        


src/b/i/Bio_Eutils-1.63/Bio_Eutils/Entrez/__init__.py   Bio_Eutils(Download)
#Importing these functions with leading underscore as not intended for reuse
from Bio_Eutils._py3k import urlopen as _urlopen
from Bio_Eutils._py3k import urlencode as _urlencode
from Bio_Eutils._py3k import HTTPError as _HTTPError
 
E-utilities.""", UserWarning)
    # Open a handle to Entrez.
    options = _urlencode(params, doseq=True)
    #print cgi + "?" + options
    try: