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25 lines
498 B
Python
25 lines
498 B
Python
from __future__ import print_function
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"""Demo using Gevent with mysqlclient."""
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import gevent.hub
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import MySQLdb
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def gevent_waiter(fd, hub=gevent.hub.get_hub()):
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hub.wait(hub.loop.io(fd, 1))
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def f(n):
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conn = MySQLdb.connect(user='root', waiter=gevent_waiter)
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cur = conn.cursor()
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cur.execute("SELECT SLEEP(%s)", (n,))
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cur.execute("SELECT 1+%s", (n,))
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print(cur.fetchall()[0])
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gevent.spawn(f, 1)
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gevent.spawn(f, 2)
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gevent.spawn(f, 3)
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gevent.spawn(f, 4)
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gevent.sleep(5)
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