小白请教pandas的条件输出？

Question

import numpy as np
import pandas as pd
data={'a':[1,0,7,4],'b':[2,0,5,4],'c':[5,0,6,7],'d':[0,0,5,7]}
df=pd.DataFrame(data)
print(df)
for index,row in df.iterrows():
print(row)

问题：怎样让元素的值为0时不输出，某行全部为0时，整行不输出，怎样把Name: 0, dtype: int64行去掉换成一行－－－－－－－－－分隔符谢谢！

Answer 1

刚想说加if条件啊，后来一看python不敢说不敢说大佬惹不起