Exercise 5: str vs repr — Possible Solution
====================================================================

values = ["7", 7, "seven", 7.0, None, True]

print(f"{'str':<8}{'repr':<10}{'type'}")
print("-" * 30)
for v in values:
    print(f"{v!s:<8}{v!r:<10}{type(v).__name__}")

Output:
str     repr      type
------------------------------
7       '7'       str
7       7         int
seven   'seven'   str
7.0     7.0       float
None    None      NoneType
True    True      bool

WHY THIS WORKS AS AN ANSWER
------------------------------
!s asks for the everyday text of a value and !r for its code-style
form, and the colon after it still takes the usual alignment spec,
so {v!r:<10} means repr, left-aligned in 10 characters. The first
two rows show the point of the exercise: the string '7' and the
integer 7 look identical under str but different under repr, where
the string gets quotes. This is also the reason print(['a']) shows
quotes, because printing a collection uses repr for the items inside
it.