代码：
from pycoingecko import CoinGeckoAPI
cg = CoinGeckoAPI()
a=cg.get_price(ids='bitcoin', vs_currencies='usd')
{'bitcoin': {'usd': 3462.04}}
print(a)
错误：
Traceback (most recent call last):
File "C:\Python39\lib\site-packages\urllib3\connectionpool.py", line 696, in urlopen
self._prepare_proxy(conn)
File "C:\Python39\lib\site-packages\urllib3\connectionpool.py", line 964, in _prepare_proxy
conn.connect()
File "C:\Python39\lib\site-packages\urllib3\connection.py", line 364, in connect
conn = self._connect_tls_proxy(hostname, conn)
File "C:\Python39\lib\site-packages\urllib3\connection.py", line 501, in connect_tls_proxy
socket = ssl_wrap_socket(
File "C:\Python39\lib\site-packages\urllib3\util\ssl.py", line 453, in ssl_wrap_socket
ssl_sock = ssl_wrap_socket_impl(sock, context, tls_in_tls)
File "C:\Python39\lib\site-packages\urllib3\util\ssl.py", line 495, in _ssl_wrap_socket_impl
return ssl_context.wrap_socket(sock)
File "C:\Python39\lib\ssl.py", line 500, in wrap_socket
return self.sslsocket_class._create(
File "C:\Python39\lib\ssl.py", line 1040, in _create
self.do_handshake()
File "C:\Python39\lib\ssl.py", line 1309, in do_handshake
self._sslobj.do_handshake()
socket.timeout: _ssl.c:1112: The handshake operation timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Python39\lib\site-packages\requests\adapters.py", line 439, in send
resp = conn.urlopen(
File "C:\Python39\lib\site-packages\urllib3\connectionpool.py", line 755, in urlopen
retries = retries.increment(
File "C:\Python39\lib\site-packages\urllib3\util\retry.py", line 574, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='api.coingecko.com', port=443): Max retries exceeded with url: /api/v3/simple/price?ids=bitcoin&vs_currencies=usd (Caused by ProxyError('Cannot connect to proxy.', timeout('_ssl.c:1112: The handshake operation timed out')))