scan redis by python.

redis_scan.py

import redis

pool=redis.ConnectionPool(host='redis_hostname', port=6379, max_connections=100)
r = redis.StrictRedis(connection_pool=pool)

cursor_number, keys = r.execute_command('scan', 0, "count", 200000)

while True:
    if cursor_number == 0:
        # 结束一次完整的比遍历
        break
    cursor_number, keys = r.execute_command('scan', cursor_number, "count", 200000)
    # do something with keys