Slice string based on dictionary membership

Question

First, I have two dictionaries. Suppose one is of teachers and another is of students. Values are IDs.
teachers = {"TEACH1": 190010, "TEACH2": 191034, ...}
students = {"STUD1": 200035, "STUD2": 203046, ...}
[Note that, for demonstration purposes, no name repeats. In other words, teachers and students are mutually unique.]
Now, a string comes in after every period at this school.
Suppose: "TEACH1 STUD2 STUD7 STUD6 TEACH2 STUD3 STUD4 STUD6". (Once again, please be patient. For online classes, a student can be in multiple classes simultaneously.)
So, the task is to make the string neater. For example:
string_list=["TEACH1 STUD2 STUD7 STUD6", "TEACH2 STUD3 STUD4 STUD6"]
The assumed best practice is string.split() and for, if-statements.
• A slice starts from a teacher.
• A slice ends with a student.
• A slice may contain a teacher and zero students (everyone bunked the class), but never no teacher and some students.
• A slice always ends before the next teacher or the end of the string.
Comment for more context.

Answer 1

hello! heres my solution::

g = []
a = string_list.split(" ")
for x in a:
if x in teachers or x in students:
g.append(x)

g = " ".join(g)

def neat(a):
g = a.split("teach")
for x in g:
if len(x) >= 1:
yield "teach" + x.strip(" ")

b = (list(neat(g)))
print(b)

Answer 2

Thank you for your answer, madeline 😃