When writing short shell scripts or short Python scripts, I often challenge myself by typing
```plaintext
$ cat > myscript.py
import sys,os,re
from glob import glob
# and basically attempt to write the whole script correctly at the first attempt,
# with vim being only the backup plan
```
Basically this `cat > filename` construct takes everything you type up until a `Ctrl-D` on a blank line, which signifies `end-of-file`