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   源码介绍

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入门好例子，亲自试验的代码

import  requests;
import sys;
import  time;

ms_usr = "http://www.baidu.com";

ls_res = requests.get(ms_usr)


print("返回码为："   str(ls_res.status_code))
print("网页源码为："   ls_res.text)


ls_file = "aaaaa.png";

ms_usr = "https://www.baidu.com/img/bd_logo1.png";
data = requests.get(ms_usr);
with open(ls_file,'wb') as f:
    f.write(data.content);
    print("已经图片一次性保存到"   ls_file)

ls_file = "bbbb.png";
data = requests.get(ms_usr, stream=True);
buffersize = 10;
ln_count = 0;
total_length = int(data.headers.get("Content-Length"))

with open(ls_file, "wb") as f:
    for chunk in data.iter_content(chunk_size=buffersize):
        if chunk:
            ln_count =len(chunk);
            done = int(50 * ln_count / total_length)
            sys.stdout.write("\r[%s%s]" % ('█ ' * done, ' ' * (50 - done)))
            # print('█', sep=',', end="")
            sys.stdout.flush()
            time.sleep(0.01)
            #print("分块写入："   str(ln_count))
            f.write(chunk);
    print("图片大小："   str(ln_count)   "\r\n图片以分块写入的方式保存到："   ls_file)