Add a character to a specific duplicate string-CodePudding

I'm trying to add a character to a specific duplicate string, like in the following situation:

nomes_comp = ['Fulano A', 'Beltrano B', 'Fulano A']

So I have duplicate items on my list; I would like to add another character in one of the duplicate items, hoping to get the following output:

nomes_comp = ['Fulano A', 'Beltrano B', 'Fulano A1']

I'm trying this way, but it's not working:

for nome in zip(nomes[0], nomes[1]):
   nomes_comp.append(nome[0]   ' '   nome[1])

CodePudding user response：

You can try:

nomes_comp = ["Fulano A", "Beltrano B", "Fulano A"]

out, cnt = [], {}
for n in nomes_comp:
    if n in cnt:
        cnt[n]  = 1
        out.append(f"{n}{cnt[n]}")
    else:
        cnt[n] = 0
        out.append(n)

print(out)

Prints:

['Fulano A', 'Beltrano B', 'Fulano A1']

CodePudding user response：

Use a dictionary (or a collections.defaultdict) to keep track of how many occurrences you've found.

nomes_comp = ['Fulano A', 'Beltrano B', 'Fulano A']

count_d = dict()

for i, n in enumerate(nomes_comp):
    c = count_d.get(n, 0)
    count_d[n] = c   1
    if c:
        nomes_comp[i] = n   str(c)

After you do this, the original nomes_comp is modified to:

['Fulano A', 'Beltrano B', 'Fulano A1']

CodePudding user response：

Use Counter.

from collections import Counter

counts = Counter(nomes_comp)
for name, count in counts:
    if count > 1:
        ...

Generate and store a new unique name for such entries.

CodePudding user response：

You could use an OrderedDict from the collections module and add a character to the duplicate strings whenever a value is already present in the OrderedDict:

from collections import OrderedDict

nomes_comp = ['Fulano A', 'Beltrano B', 'Fulano A']

d = OrderedDict()

for nome in nomes_comp:
    if nome in d:
        d[nome '1'] = None
    else:
        d[nome] = None

nomes_comp = list(d.keys())

print(nomes_comp)
# ['Fulano A', 'Beltrano B', 'Fulano A1']

Salve do Brasil!