a="Time:20190822_111655_554 Start Cloud new case, Num=1, Input=/data/voice/20190725_035326_2_voice_in_dump.wav"
#先用逗号进行切割，获取得到第二截的字符
s=a.split(",")[1]
#再用Num=进行切割得到1
c=s.split("Num=")[1]
print(s)
print(c)
原文：https://www.cnblogs.com/wyx1990/p/12006313.html