Hey guys, wondering if you can help with this as I am stuck on step 3. First I have a question about step two though.

For step two: the .strip() function doesn’t work on the email file, but the .replace() function does. However if I save email_one as a string rather than a .txt file, then the .strip() function will work. Can anyone explain why that is?

So for example, this works:

```
email_split = email.replace("learning algorithms", "*" * len("learning algorithms"))
return email_split
```

but this doesn’t

```
email_split = email.strip("learning algorithms")
return email_split
```

I don’t get why…

Now on to my main question. For step three, my “for” loop is only returning the last value, rather than iterating through the list.

```
def proprietary_terms(email):
proprietary_terms = ["she", "personality matrix", "sense of self", "self-preservation", "learning algorithms", "her", "herself"]
for i in proprietary_terms:
if i in email:
email_propterm = email.replace(i, "*" * len(i))
return email_propterm
#print(email_two)
print(proprietary_terms(email_two))
```

So when I call the function the only word that gets replaced with “*” * len(i) is “herself”. I cant figure out why thats happening. When I indent it (as expected) it only iterates through the first value of i, usually when that happens I unindent and it iterates through the whole list, but not this time.

Any help would be greatly appreciated. Thanks.