TOML.parsefile error on reading date formatted variable

New to Julia
1

I have the test.toml file, containing the single line:

period = 2021-04-20 # should be formatted as YYYY-MM-DD

When I try to parse it via:

julia> using TOML
julia> TOML.parsefile("test.toml")

the following error arises:

ERROR: TOML Parser error:
/home/orca/Dropbox/work/study/computing/Julia/sandbox/test.toml:1:21 error: expected newline after key value pair
  period = 2021-04-20 # should be of type Date 
                      ^                         
Stacktrace:
 [1] parse
   @ ./toml_parser.jl:441 [inlined]
 [2] parsefile(f::String)
   @ TOML /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/TOML/src/TOML.jl:43
 [3] top-level scope
   @ REPL[2]:1

If I delete the comment: # should be formatted as YYYY-MM-DD in the original test.toml file, it is correctly parsed:

julia> TOML.parsefile("test.toml")
Dict{String, Any} with 1 entry:
  "period" => Date("2021-04-20")

How can I use an end of line comment in the .toml file for a field formatted like period? In principle, I would like to keep the comment, in the same line, to help the user input correctly the value for the variable period. Of course, there are two ways around this, which Iā€™d rather not use:
(1) move the comment to a line by itself, right before the line declaring period,
(2) not using any comment at all.

Cheers

2

Beside option (1) you can incorporate the format in the section header, here my code snippet:

import TOML
const PERIOD_LABEL = "Period, YYYY-MM-DD"
input_toml_file = "/media/stefan/DATA/data/temp/period.toml"

period_in = Dict(PERIOD_LABEL => Dict("period" => "2021-04-20"))

open(input_toml_file, "w") do io
    println(io, "# --- A nice Title ----------------------------------------------")
    println(io, "# --- Some instructions ... šŸ“…")
    TOML.print(io, period_in)
end

# --- read back:
@show period_out = TOML.tryparsefile(input_toml_file)
@show period_out[PERIOD_LABEL]
@show period_out[PERIOD_LABEL]["period"]

P.S.:
I found the function TOML.parsefile() a little bit unreliable, therefore I prefer TOML.tryparsefile()