Change type of group of objects

Question

I need to convert a group of variables (result sets from BeautifulSoup) into strings. Is there an elegant way to do this to all of them at once instead of one by one? I was thinking something like this -

for name in [company_name, company_address, company_logo, company_cat, company_lat, company_phone, company_fax]:
    name = str(name)

I would also like to do a similar thing with re.sub -

for name in [company_name, company_address, company_logo, company_cat, company_lat, company_phone, company_fax]:
    re.sub('<[^<]+?>', '', name)

Thanks

Tim · Accepted Answer · 2014-07-05 00:29:58Z

1

for name in [company_name, company_address, company_logo, company_cat, company_lat, company_phone, company_fax]:
    name = str(name)

This will not work because you are modifying the list inside the for loop, you can however use a list comprehension for this, which is a one-liner:

list_as_strings = [str(name) for name in [company_name, company_address, company_logo, company_cat, company_lat, company_phone, company_fax]]

Demo

>>> a = [1, 2, 3, 4]

>>> for i in a:
...     i = str(i)
...
>>> a
[1, 2, 3, 4]


>>> b = [str(i) for i in a]
>>> b
['1', '2', '3', '4']

edited Jul 5, 2014 at 0:29

answered Jul 5, 2014 at 0:21

Tim

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2 Comments

metalayer Over a year ago

This doesn't change the object type. Result of print (type(company_name)) <class 'bs4.element.ResultSet'>

Tim Over a year ago

@metalayer you cannot change an object's type. You can however reassign the new values to the existing variables: company_name, company_address, company_logo, company_cat, company_lat, company_phone, company_fax = list_as_strings, that will get the result that you want

furas · Accepted Answer · 2014-07-05 00:27:47Z

0

List comprehension should be faster but this solution can be more readable for you.

list1 = [company_name, company_address, company_logo]

list2 = []

for name in list1:
    list2.append( str(name) )

company_name, company_address, company_logo = list2

Now you have strings in previous variables.

answered Jul 5, 2014 at 0:27

furas

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