concatenating strings

[EHC]

hello!

since i am a py noob, please bear with me ; )

how is it possible to concat a string and an integer in a
print-command? i've tried

print "This robot is named %s. The current speed setting is %d, and %s
has a lifetime of %d" % (self.name , self.speed , self.name)

as well as

print "This robot is named %s. The current speed setting is %d, and %s
has a lifetime of %d" & self.name % self.speed % self.name

though nothing works out...

background is a class named Robot with members speed, name, etc...

tia,
Erich

 

[Laurent Pointal]

EHC a écrit :

hello!

since i am a py noob, please bear with me ; )

how is it possible to concat a string and an integer in a
print-command? i've tried

print "This robot is named %s. The current speed setting is %d, and %s
has a lifetime of %d" % (self.name , self.speed , self.name)

Four % formating with only three arguments to format. It cannot work...

print "This robot is named %s. The current speed setting is %d, and %s
has a lifetime of %d" % (self.name , self.speed , self.name, self.lifetime)

....

background is a class named Robot with members speed, name, etc...

May try this too:
print "This robot is named %(name)s. The current speed setting is
%(speed)d, and %(name)s has a lifetime of %(lifetime)d" % self.__dict__

[note: liftefime may be a dynamically calculated value, and should be
providen via an accessor attribute]

 

[Erich Pul]

thank you, i just plainly overlooked it ; )

now it works

 

[Caleb Hattingh]

Hi Erich

If you're going to be doing a lot of string substitution, you should
look at the Templating support in the library:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/304005

and (a little bit fancier):

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/335308

Regards
Caleb