如何将由连字符分隔的复合词拆分为两个单独的词

Question

I have the following list

list1= ['Dodd-Frank', 'insurance', 'regulation']

I used the following to remove the hyphen

new1 =[j.replace('-', ' ') for j in list1]

The result I got

new1= ['Dodd Frank', 'insurance', 'regulation']

The result that Ideally want is

new1= ['Dodd', 'Frank', 'insurance', 'regulation']

How can I accomplish this in the most pythonic (efficient way)

Answer 1

list1 = ['Dodd-Frank', 'insurance', 'regulation']
new1 = '-'.join(list1).split('-')
print(new1)

Prints:

['Dodd', 'Frank', 'insurance', 'regulation']

Answer 2

From Ugly to Beautiful

Beautiful is better than ugly.

But it's usually rewarding to move from ugly code to beautiful code. So, we'll first attack this problem using loops , and then we'll massage the loop-y solution into a one-liner in a number of steps.

A First Attempt

res = []
for item in list1:
    sublist = item.split("-")
    for subitem in sublist:
        res.append(subitem)

A Second Attempt

We can do better by splitting sublist in the header of the inner for loop, in order to avoid the assignment just before the loop.

res = []
for item in list1:
    for subitem in item.split("-"):
        res.append(subitem)

And for the Final Act...

Now that we have our loop in iterate-then-append form, we can conveniently massage it into a one-liner.

res = [subitem for item in list1 for subitem in item.split("-")]

Answer 3

list2 = []
[list2.extend(i.split("-")) for i in list1] 

list2:

['Dodd', 'Frank', 'insurance', 'regulation']

Answer 4

This can be done with a single list comprehension, without needing you to construct any intermediate data structures:

my_list = ['Dodd-Frank', 'insurance', 'regulation']

def split_hyphens(lst):
    return [i for word in lst for i in word.split("-")]

print(split_hyphens(my_list))

with output

['Dodd', 'Frank', 'insurance', 'regulation']

Answer 5

Variation using yield from

list1= ['Dodd-Frank', 'insurance', 'regulation']

def hyphen_split(list1):
    for sublst in list1:
        yield from sublst.split("-")

print(list(hyphen_split(list1)))

Output

['Dodd', 'Frank', 'insurance', 'regulation']

[Program finished]