我是python的新手,特别是在使用模块时。我必须使用bottle.py模块。有没有办法在我的浏览器中打印一些东西,而不必返回它?更具体地说,我想要这样的东西:
import pymysql
from bottle import Bottle,run
app = Bottle()
@app.route('/conn')
def conn():
**print("Trying to connect to database...")**
try:
conn = pymysql.connect(user="X",passwd="X",host="X",port=X,database="X")
return "Connection succeded"
except:
return "Oops...connection failed"
run(app, host='localhost',port = 8080)
如何打印类似"试图连接到数据库而不必返回它?
答案 0 :(得分:3)
print
语法/功能只会显示在不在浏览器上的stdout上。使用yield
代替return
来“逐步显示内容”(缺少更好的词语)。出于这个原因,我过去常常喜欢Bottle over Flask(尽管Flask有不同的做法)。
import pymysql
from bottle import Bottle,run
app = Bottle()
@app.route('/conn')
def conn():
yield "Trying to connect to database..."
try:
conn = pymysql.connect(user="X",passwd="X",host="X",port=X,database="X")
yield "Connection succeded"
except:
yield "Oops...connection failed"
run(app, host='localhost',port = 8080)