时间：2020-10-22 22:32:59 | 栏目：Python代码 | 点击：次
我就废话不多说了，还是直接看代码吧！
# 利用python在内存中读写str和二进制数据
from io import StringIO
from io import BytesIO
f = StringIO()
print(f.write('hello ')) # 6
print(f.write('world!')) # 6
print(f.getvalue()) # hello world!
f = BytesIO()
print(f.write('中文'.encode('utf-8'))) # 6
print(f.getvalue()) # b'\xe4\xb8\xad\xe6\x96\x87'
补充知识：python二进制转到float
看代码吧！
# -*- coding: utf-8 -*- """ Created on Tue Dec 3 14:38:04 2019 @author: xuguanghui """ import numpy as np mlplib_label = r"C:\Users\xuguanghui\Desktop\106421_mlplib.lab" train_label = r"C:\Users\xuguanghui\Desktop\106421_train.lab" mlplib_txt = r"C:\Users\xuguanghui\Desktop\106421_mlplib.txt" train_txt = r"C:\Users\xuguanghui\Desktop\106421_train.txt" mlplib_lab = np.fromfile(mlplib_label, dtype=np.int32).reshape(-1, 892) train_lab = np.fromfile(train_label, dtype=np.float32).reshape(-1, 892) np.savetxt(mlplib_txt, mlplib_lab, fmt='%d') np.savetxt(train_txt, train_lab, fmt='%d')