Concatenating Strings in Python

[iHammmy]

Hello,

 

I am abit confused what you would use concantenating strings for in Python... Here is the code.

print ("You can concantenate two  " + "strings with the '+' operator.")

Thanks to anyone that can help,

 

- Harry

[werto165]

e.g.

what's your name : Bill computer responds: "your name is "Bill" "

 

Depends on what you're really doing, it could be used for an all manner of things. 

 

Or maybe a program that gets the date and you convert it to a string, so "Todays date is" + whatever variable for the date. 

[iHammmy]

e.g.

what's your name : Bill computer responds: "your name is "Bill" "

 

Depends on what you're really doing, it could be used for an all manner of things. 

Thanks mate

 

Seems pretty pointless to be though

[werto165]

Thanks mate

 

Seems pretty pointless to be though

I found a list of practical applications on wikipedia, but sure there's more, personally I just think of it as an easy way to nicely format data that's been inputed or calculated from another value you've inputted perhaps.  the applications on wikipedia are mostly audio feeback systems

 

"This technique is also used in number change announcements, voice mail systems, or most telephony applications that provide dynamic feedback to the caller (e.g. moviefone, tellme, and others)."

[Guest]

Questioning the utility of string concatenation? Fascinating. What will you do when you see the string format method, I wonder.

[iHammmy]

Questioning the utility of string concatenation? Fascinating. What will you do when you see the string format method, I wonder.

Not sure, as I only started learning python last week

[Guest]

Not sure, as I only started learning python last week

 

Time to start writing real code, that's the only way to understand these things.

[iHammmy]

Time to start writing real code, that's the only way to understand these things.

Wow, the anger is strong in this one

[Guest]

Wow, the anger is strong in this one

 

Call me angry if you like, you aren't learning a language until you use it. Basic questions like this will answer themselves once you do.

[iHammmy]

Call me angry if you like, you aren't learning a language until you use it. Basic questions like this will answer themselves once you do.

Well I have used it...

[SIGSEGV]

Say you are making a program which requires you to log in you need it to display the username at some point which is stored in a variable. With string concatenation you don't usually just concatenate two bare strings, it's usually done with a string (or a few) and a variable (or a few), e.g:

print("Username:\n"+usrname)

[iHammmy]

Say you are making a program which requires you to log in you need it to display the username at some point which is stored in a variable. With string concatenation you don't usually just concatenate two bare strings, it's usually done with a string (or a few) and a variable (or a few), e.g:

print("Username:\n"+usrname)

I don't mean using variables...

 

The code which I used in the OP prints like this:

 

You can concentrate two strings with the '+' operator.

 

[SIGSEGV]

I don't mean using variables...

 

The code which I used in the OP prints like this:

 

You can concentrate two strings with the '+' operator.

 

Well yeah that is pointless if you're just doing:

print("part of the string"+" other part of the string")

[colonel_mortis]

Come on guys, at least try to stay on topic.

 

As for the OP, concatenating two string literals (things enclosed in quotes) is fairly useless, although if your lines are getting too long, it can be good to break them up into multiple shorter lines, and concatenating string literals is a way to split them up. Once you involve variables though, it becomes far more useful, allowing you to do stuff like ("hello "+name).

[iHammmy]

Come on guys, at least try to stay on topic.

 

As for the OP, concatenating two string literals (things enclosed in quotes) is fairly useless, although if your lines are getting too long, it can be good to break them up into multiple shorter lines, and concatenating string literals is a way to split them up. Once you involve variables though, it becomes far more useful, allowing you to do stuff like ("hello "+name).

Thanks

[Satlen]

Well, I did a small project a while back where you had to describe different adjectives of an object (i cant remember what it was) and I used a for loop and if statment to keep adding different attributes to the sentence.

 

EX: string = "The door is"

 

if (color == red)

string = string + "red"

 

etc....

 

This is just a super basic example, but trust me, it is not pointless.

[Blade of Grass]

You will use string concatenation all the time to build your output messages.

 

I've dug through some of the work I did awhile ago (and yay! VB6):

Msg = "There are" & SquareMeter & " square meters in" & Acres & " acres." Msg = "Your order total for" & SquareFootage & " square feet of flooring is " & Format$(Total, "currency") Msg = "The total commission on your sale of " & Format$(FinalPrice, "currency") & " is " & Format$(Cost, "currency") & "."

String concatenation (the symbol VB6 uses is the &) is very useful, above are three different examples of it being used (it was from review work I had to do).

[iHammmy]

You will use string concatenation all the time to build your output messages.

 

I've dug through some of the work I did awhile ago (and yay! VB6):

Msg = "There are" & SquareMeter & " square meters in" & Acres & " acres." Msg = "Your order total for" & SquareFootage & " square feet of flooring is " & Format$(Total, "currency") Msg = "The total commission on your sale of " & Format$(FinalPrice, "currency") & " is " & Format$(Cost, "currency") & "."

String concatenation (the symbol VB6 uses is the &) is very useful, above are three different examples of it being used (it was from review work I had to do).

 

Thanks, this helped alot