[Tutor] Hello World in Python without space
Dear all,
I have Python 3.2 installed on Windows 7. I am a complete beginner playing
around with the basic functions. My problem is the following script:
name="world"
print("Hello", name,"!")
The result is:
Hello world !
However, I don't want the space before the exclamation mark. I want this:
Hello world!
I tried to solve the problem with e.g.:
print("Hello",name.strip(),"!")
but the result is the same.
Can anyone out there help me? Thank you.
Regards,
Robert
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Re: [Tutor] Hello World in Python without space
Sending args to the print command always puts spaces between them.
Try:
print("Hello {name}!".format(name=name))
2011/7/10 Robert H
> Dear all,
>
>
> I have Python 3.2 installed on Windows 7. I am a complete beginner playing
> around with the basic functions. My problem is the following script:
>
>
> name="world"
> print("Hello", name,"!")
>
>
> The result is:
> Hello world !
>
>
> However, I don't want the space before the exclamation mark. I want this:
> Hello world!
>
>
> I tried to solve the problem with e.g.:
> print("Hello",name.strip(),"!")
> but the result is the same.
>
>
> Can anyone out there help me? Thank you.
>
>
> Regards,
> Robert
>
> ___
> Tutor maillist - Tutor@python.org
> To unsubscribe or change subscription options:
> http://mail.python.org/mailman/listinfo/tutor
>
>
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Re: [Tutor] Hello World in Python without space
Robert H wrote:
> I have Python 3.2 installed on Windows 7. I am a complete beginner playing
> around with the basic functions. My problem is the following script:
>
>
> name="world"
> print("Hello", name,"!")
>
>
> The result is:
> Hello world !
>
>
> However, I don't want the space before the exclamation mark. I want this:
> Hello world!
>
>
> I tried to solve the problem with e.g.:
> print("Hello",name.strip(),"!")
> but the result is the same.
print() by default inserts a space between its arguments. You can avoid that
by specifying a separator explicitly with the "sep" keyword. Let me show it
in the interactive interpreter which is generally a good place to experiment
with small snippets of code:
>>> name = "Robert"
>>> print("Hello ", name, "!", sep="") # Note the explicit " " after "Hello"
Hello Robert!
Another goodie is that you can easily get useful information about modules,
classes, keywords, and functions, e. g.
>>> help(print)
shows
print(...)
print(value, ..., sep=' ', end='\n', file=sys.stdout)
Prints the values to a stream, or to sys.stdout by default.
Optional keyword arguments:
file: a file-like object (stream); defaults to the current sys.stdout.
sep: string inserted between values, default a space.
end: string appended after the last value, default a newline.
Use help() without argument to learn more about the interactive help.
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Re: [Tutor] Hello World in Python without space
"Robert H" wrote
name="world"
print("Hello", name,"!")
Hello world !
However, I don't want the space before the exclamation
mark. I want this:
Hello world!
Can anyone out there help me? Thank you.
I see you've already had two answers, a third is
to construct the string before printing it. There
are various ways to do that:
The simplest:
output = "Hello " + name + "!"
An alternative which is more efficient for
larger numbers of substruings is:
output = "".join(["Hello ",name,"!"]) # thats an empty string to
start
The thirs is to use a formatstring, but thats
what Izz did in his print call.
Whichever method you use you then use
print(output)
Lots of options. As Peter said, use the >>> prompt to
experiment to find which works best for you.
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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Re: [Tutor] broken script - curiouser and curiouser
On Thursday 07 July 2011 15:36:06 Michael M Mason wrote: > Maybe you've been editing ex25 and then executing ex26. That'd get you the > same error in the same place over and over again. Doh! They do say that there is one born every minute. Thanks, Lisi ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
