while True: learn()

INSERT ROW 增加一行数据loc（不推荐）12345678910df = DataFrame(columns=('lib', 'qty1', 'qty2'))for i in range(5): df.loc[i] = [randint(-1,1) for n in range(3)]print(df)# lib qty1 qty2# 0 0 0 -1# 1 -1 -1 1# 2 1 -1 1# 3 0 0 0# 4 1 -1 -1 loc方法可以接受一个列index， ...