How to display subprocess in Flask?

U

ubushan2016-02-16 18:34:59

Flask

ubushan, 2016-02-16 18:34:59

Guys, tell me, I'm a beginner in Python and Flask, I'm just starting, how to display Subprocess in the browser correctly?
For example, I write this

from app import app
import subprocess

@app.route('/')
@app.route('/index')

def index():
    user = { 'nickname': 'MyName' }
    p = subprocess.Popen("ping yandex.ru", stdout=subprocess.PIPE,)
    out = p.communicate(str)
    return '''
<html>
  <head>
    <title>MyFirstFlaskPage</title>
  </head>
  <body>
    <h1>Hello, ''' + user['nickname'] + '''</h1>
    <h1>Hello, ''' + out + '''</h1>
  </body>
</html>
'''

Flask starts the server, but in the browser it shows the error

builtins.TypeError

TypeError : Can't convert 'tuple' object to str implicitl y

from app import app
import subprocess

@app.route('/')
@app.route('/index')

def index():
    #user = { 'nickname': 'Ivan' }
    p = subprocess.Popen("ping yandex.ru", stdout=subprocess.PIPE,)
    out = p.communicate(str)
    return out

output in browser in one line :
Pinging yandex.ru [5.255.255.55] with 32 bytes of data: Reply from 5.255.255.55: bytes=32 time=2ms TTL=53 Reply from 5.255.255.55: bytes=32 time=2ms TTL =53 Reply from 5.255.255.55: bytes=32 time=2ms TTL=53 Reply from 5.255.255.55: bytes=32 time=2ms TTL=53 Ping statistics for 5.255.255.55: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 2ms, Maximum = 2ms, Average =

2ms

1st question in the first example, what is wrong?
2nd question how to display the correct structured output?

Thank you!

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1 answer(s)

E

EugenKozlov, 2016-02-18
@EugenKozlov

Hello, ''' + user['nickname'] + '''
Hello, ''' + str(out) + '''