[Chepy](https://github.com/securisec/chepy)

The challenge includes a file that has spaces and unicode spaces.

```
from chepy import Chepy
c = Chepy("whitepages.txt", "r")
print(
c.load_file()
# replace unicode whitespace
.find_replace("\\u2003", "0")
# replace whitespace
.find_replace(" ", "1")
# decode binary
.from_binary()
# search flag
.search_ctf_flags("LLS")
)
```