in safe_rl/utils/logx.py [0:0]
def log_tabular(self, key, val):
"""
Log a value of some diagnostic.
Call this only once for each diagnostic quantity, each iteration.
After using ``log_tabular`` to store values for each diagnostic,
make sure to call ``dump_tabular`` to write them out to file and
stdout (otherwise they will not get saved anywhere).
"""
if self.first_row:
self.log_headers.append(key)
else:
assert key in self.log_headers, "Trying to introduce a new key %s that you didn't include in the first iteration"%key
assert key not in self.log_current_row, "You already set %s this iteration. Maybe you forgot to call dump_tabular()"%key
self.log_current_row[key] = val