Is there a way to join strings in a special way in python-CodePudding

Eg: I have a list

temp = ["TOM", "JOHN"]

I want to join such that the result is

" Hi! TOM Welcome. Hi! JOHN Welcome."

Something whose pseudocode would be like this

"Hi! {} Welcome.".join(temp)

CodePudding user response：

Sure. A combination of a generator expression (or a list comprehension) and a " ".join to join the formatted texts.

>>> names = ["TOM", "JOHN"]
>>> " ".join(f"Hi! {name} welcome." for name in names)
'Hi! TOM welcome. Hi! JOHN welcome.'

CodePudding user response：

There are many possibilities for string formatting, here is one using f-strings:

l = ["TOM", "JOHN"]
' '.join(f'Hi {i}! Welcome.' for i in l)

output:

'Hi TOM! Welcome. Hi JOHN! Welcome.'

Here is another, using format:

l = ["TOM", "JOHN"]
' '.join('Hi {0}! Welcome.'.format(i) for i in l)

And finally, the good old % substitution:

l = ["TOM", "JOHN"]
' '.join('Hi %s! Welcome.' % i for i in l)

CodePudding user response：

You can use a so called f-string. In addition to that I used a function that lets you change the message easily:

temp = ["TOM", "JOHN"]

def message(name):
    return f"Hi! {name} Welcome."

out = " ".join(message(i) for i in temp)
print(out)