Q:

Checking if an attribute with no value exists with BeautifulSoup

I am trying to retrieve label text next to checkboxes on a form from only those that are checked.
Here is the html:
<div class="x-panel-bwrap" id="ext-gen1956"><div 
class="x-panel-body" id="ext-gen1957" style="width: 226px;">
<div class="x-form-check-wrap" id="ext-gen1959"><input type="checkbox" autocomplete="off" id="ext-comp-1609" name="ext-comp-1609" class=" x-form-checkbox x-form-field">
<label for="ext-comp-1609" class="x-form-cb-label" id="ext-gen1960">labeltext1</label></div>
<div class="x-form-check-wrap" id="ext-gen1961"><input type="checkbox" autocomplete="off" id="ext-comp-1607" name="ext-comp-1607" class=" x-form-checkbox x-form-field">
<label for="ext-comp-1607" class="x-form-cb-label" id="ext-gen1962">labeltext2</label></div>
<div class="x-form-check-wrap" id="ext-gen1963"><input type="checkbox" autocomplete="off" id="ext-comp-1605" name="ext-comp-1605" class=" x-form-checkbox x-form-field" checked="">
<label for="ext-comp-1605" class="x-form-cb-label" id="ext-gen1964">labeltext3</label></div>

The label I want to get that is beside a checked box is differentiated by the attribute checked=""
for checkboxes in soup.find_all('input', attrs={"id":"ext-comp-1609"}):
    if checkboxes.find('input', attrs={"checked":""}):
        label_1 = soup.find('label',{'id':'ext-gen1960'}).text
        print(label_1)
    else:
        continue

for checkboxes in soup.find_all('input', attrs={"id":"ext-comp-1607"}):
    if checkboxes.find('input', attrs={"checked":""}):
        label_2 = soup.find('label',{'id':'ext-gen1962'}).text
        print(label_2)
    except:
        continue

for checkboxes in soup.find_all('input', attrs={"id":"ext-comp-1605"}):
    if checkboxes.find('input', attrs={"checked":""}):
        label_3 = soup.find('label',{'id':'ext-gen1964'}).text
        print(label_3)
    else:
        continue

My problem is that this grabs the labels whether they are checked or not. I have tried using has_attr() as well but it yields the same results. 
Tried solutions:
soup = BeautifulSoup(browser.page_source, 'html.parser')
for checkbox in soup.find_all('input', checked=True):
    print(checkbox.label.get_text())

and
soup = BeautifulSoup(browser.page_source, 'html.parser')
for checkbox in soup.select('input[checked]'):
    print(checkbox.label.get_text())

for checkbox in soup.find_all('input', checked=True):
    print(checkbox.find_next_sibling("label").get_text())

A:

You should apply the checked=True check for all the input elements. Then, get the inner label element and it's text:
soup = BeautifulSoup(data, "html.parser")
for checkbox in soup.find_all('input', checked=True):
    print(checkbox.label.get_text())

Note that for html5lib or lxml, you would need a different way to get to the labels:
soup = BeautifulSoup(data, "html5lib")
for checkbox in soup.find_all('input', checked=True):
    print(checkbox.find_next_sibling("label").get_text())

Works for me on your input data:
In [1]: from bs4 import BeautifulSoup

In [2]: data = """your HTML here"""

In [3]: soup = BeautifulSoup(data, "html.parser")

In [4]: for checkbox in soup.find_all('input', checked=True):
   ...:     print(checkbox.label.get_text())
   ...:     
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