def set_alt_usd_pair(self, type):
"""
get center price by search and replace for USD with USDT only
todo: extend in PriceFeed or base.py for other alts, e.g. USDC, TUSD,etc
"""
alt_usd_pair = self._pair
i = 0
while i < 2:
if re.match(r'^USD$', self._pair[i], re.I):
alt_usd_pair[i] = re.sub(r'USD', type, self._pair[i])
i = i + 1
self._pair = alt_usd_pair
self._symbol = join_pair(self._pair)
def pair(self, pair):
self._pair = pair
self._symbol = join_pair(pair)