How do I display the value of a python variable (in this case it is the key of my Entity class) in html?
from google.appengine.ext import db
class Entity(db.Expando):
pass
e = Entity()
e.put() # id is assigned
k = e.key() # key is complete
id = k.id() # system assigned id
html='''
<html>
<head></head>
<body>
<label>Key: %(k) </label>
<br>
</body>
</html>
'''
from google.appengine.ext import db
import cgi
class Entity(db.Expando):
pass
e = Entity()
e.put() # id is assigned
k = e.key() # key is complete
id = k.id() # system assigned id
html="""
<html>
<head></head>
<body>
<label>Key: %s </label>
<br>
</body>
</html>""" % (cgi.escape(k))
I would seriously advise you to use templates though it makes your life much easier.
With a template your solution would be something like this:
class Entity(db.Expando):
pass
e = Entity()
e.put() # id is assigned
k = e.key() # key is complete
id = k.id() # system assigned id
template = jinja_environment.get_template('templates/myTemplate')
self.response.write(template.render({'key_val':k}))
and the Mytemplate.html file would look like:
<html>
<head></head>
<body>
<label>{{key_val}}</label>
<br>
</body>
</html>
I don't know much about google app engine, but in Python, there are two ways:
html='''
<html>
<head></head>
<body>
<label>Key: %(k)s </label>
<br>
</body>
</html>
''' % locals() # Substitude %(k)s for your variable k
Second:
html='''
<html>
<head></head>
<body>
<label>Key: {0[k]} </label>
<br>
</body>
</html>
'''.format(locals())
Actually, there is the third way, which I prefer because it is explicit:
html='''
<html>
<head></head>
<body>
<label>Key: {0} </label>
<br>
</body>
</html>
'''.format(k)
Your immediate output could be:
<label>Key: {{k}} </label>
First have a look at a basic django template
getting started with templates
Then possibly have a look at jinja2
