python - 下载文件及pymysql

下载文件

from django.http import HttpResponse, Http404, StreamingHttpResponse, FileResponse

def f(request):
    file = open('/Users/ct/dev_ops_3/upload/front_source/5/download/bussiness.zip', 'rb')
    response = FileResponse(file)
    response['Content-Type'] = 'application/octet-stream'
    response['Content-Disposition'] = 'attachment;filename="bussiness.zip"'
    return response

 

pymysql

pymysql

pip install pymysql 


....
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sql语句时间的判断


https://www.cnblogs.com/baiyangcao/p/pymssql_basic.html


with使用方法：
conn = pymssql.connect(server, user, password, database) cursor = conn.cursor(as_dict=True) cursor.execute('SELECT * FROM persons WHERE salesrep=%s', 'John Doe') for row in cursor: print("ID=%d, Name=%s" % (row['id'], row['name'])) conn.close()
使用with语句（上下文管理器）
可以通过使用with语句来省去显示的调用close方法关闭连接和游标

with pymssql.connect(server, user, password, database) as conn:
with conn.cursor(as_dict=True) as cursor:
cursor.execute('SELECT * FROM persons WHERE salesrep=%s', 'John Doe')
for row in cursor:
print("ID=%d, Name=%s" % (row['id'], row['name']))