Simplify multiple functions into one in Python

Question

I am wondering how it is possible to combine the following functions into one. The functions remove the entire word if "_" respectively "/" occur in a text.

I have tried the following, and the code fulfils it purpose. It his however cumbersome and I am wondering how to simplify it.

text = "This is _a default/ text"
def filter_string1(string):
    a = []
    for i in string.split():
        if "_" not in i:
            a.append(i)
    return ' '.join(a)
def filter_string2(string):
    a = []
    for i in string.split():
        if "/" not in i:
            a.append(i)
    return ' '.join(a)

text_no_underscore = filter_string1(text)
text_no_underscore_no_slash = filter_string2(text_no_underscore)
print(text_no_underscore_no_slash)

The output is (as desired):

"This is text"

Answer 1

You can combine the if conditions.

text = "This is _a default/ text"

def filter(string):
    a = []
    for i in string.split():
        if "_" not in i and "/" not in i:
            a.append(i)
    return ' '.join(a)

print(filter(text))