fix(signature): encode non-ascii symbol

README.rst

@@ -1,5 +1,5 @@
 =================================
-Welcome to python-binance v1.0.30
+Welcome to python-binance v1.0.31
 =================================
 
 .. image:: https://img.shields.io/pypi/v/python-binance.svg

binance/__init__.py

@@ -4,7 +4,7 @@
 
 """
 
-__version__ = "1.0.30"
+__version__ = "1.0.31"
 
 from binance.async_client import AsyncClient  # noqa
 from binance.client import Client  # noqa

binance/base_client.py

@@ -374,7 +374,7 @@ def _generate_signature(self, data: Dict, uri_encode=True) -> str:
                 sig_func = self._rsa_signature
             else:
                 sig_func = self._ed25519_signature
-        query_string = "&".join([f"{d[0]}={d[1]}" for d in self._order_params(data)])
+        query_string = "&".join([f"{d[0]}={_urlencode.quote(d[1]) if d[0] == 'symbol' else d[1]}" for d in self._order_params(data)])
         res = sig_func(query_string)
         return self.encode_uri_component(res) if uri_encode else res
 

docs/changelog.rst

@@ -1,6 +1,14 @@
 Changelog
 =========
 
+v1.0.31 - 2025-10-29
+^^^^^^^^^^^^^^^^^^^^
+
+**Fixed**
+
+- fix signature encoding for non-ascii symbols (#1612), eg: 币安人生USDT
+
+
 v1.0.30 - 2025-10-14
 ^^^^^^^^^^^^^^^^^^^^