报错信息如下：
DeprecationWarning: The binary mode of fromstring is deprecated, as it behaves surprisingly on unicode inputs. Use frombuffer instead nparr = np.fromstring(imgString,np.uint8)
在做图像base64与numpy array（cv2传统格式）之间的转换测试的时候出现了以上报错，将原np.fromstring函数更新为np.frombuffer即可，如下：
import base64 import numpy as np import cv2 with open("/home/images/friend.jpg","rb") as f:#转为二进制格式 base64_data = base64.b64encode(f.read())#使用base64进行加密 #base64转换为numpy array格式： imgData = base64.b64decode(base64_data) # nparr = np.fromstring(imgData, np.uint8) #报错 nparr = np.frombuffer(imgData,np.uint8) image = cv2.imdecode(nparr,cv2.IMREAD_COLOR) cv2.imwrite("/home/images/friend_copy.jpg",image)
numpy：DeprecationWarning: The binary mode of fromstring is deprecated, as it behaves surprisingly
原文：https://www.cnblogs.com/dreamboy2000/p/15350498.html