Suggestion to concatenate (join) strings from dictinary values

Question

with the following snippet I can achieve what I'm looking for:

d = {}
d[1] = 'one'
d[2] = 'two'
d[3] = 'three'

exp = ''
for k, v in d.items():
    exp += '{}@1 + '.format(v)

exp = exp[:-3]

exp
'one@1 + two@1 + three@1'

I was wondering if there are some better solution than deleting the last characters.

@juanpa.arrivillaga: `join` accepts a generator, so square brackets are not needed. — Amadan, Mar 19 '19 at 07:38
@Amadan I know, I even like the way it looks better, but for some reason the fact that it is inconsequentially faster to use the list comprehension compels me... — juanpa.arrivillaga, Mar 19 '19 at 07:39

score 1 · Accepted Answer · answered Mar 19 '19 at 07:39

1

Using join:

d = {}
d[1] = 'one'
d[2] = 'two'
d[3] = 'three'

exp = ' + '.join('{}@1'.format(v) for v in d.values())    
print(exp)

OUTPUT:

one@1 + two@1 + three@1

answered Mar 19 '19 at 07:39

DirtyBit

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Suggestion to concatenate (join) strings from dictinary values

1 Answers1