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Skip blanks and comments

Write the codeMedium 2 stages

The parser from "Parse the whole feed" works on clean data. The ground station's real export isn't clean: it has a comment at the top, blank lines between blocks, notes from the operators, and now and then a reading that arrived cut off.

Teach the parser to skip what it can't use and to keep going when a line is damaged.

The parser from "Parse the whole feed" stops with a ValueError on the first comment line. Skip blank lines and comment lines, so it prints only the readings:

09:30:05 ENG-2: 412.5 C
09:30:05 TANK-1: 78.3 %
09:30:10 CABIN: 101.2 kPa
09:30:10 ENG-2: 415.0 C

At the top of the loop, strip the line, then continue when it's empty or starts with #. Stripping first matters: one comment is indented, and a line can hold nothing but spaces.

Skip blanks and comments
Works for any export

Finish stage 1 to unlock this stage.

A reading arrived cut off: 2026-03-14T09:30:10Z,TANK-1 has only two fields, and the parser stops at it. Report damaged lines and carry on, then count what happened:

09:30:05 ENG-2: 412.5 C
09:30:05 TANK-1: 78.3 %
Damaged line: 2026-03-14T09:30:10Z,TANK-1
09:30:10 CABIN: 101.2 kPa
09:30:10 ENG-2: 415.0 C
Parsed: 4, damaged: 1

Split into fields first, and when len(fields) != 4, print the line, count it and continue. Count the parsed lines too, and print the totals after the loop.

Report damaged lines
Works for any export
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Hints

Break and Continue in Loops

break-continue-loops.py
# break stops the loop the instant it runs
readings = [12, 45, 88, 210, 350, 190]
for value in readings:
    print("Checking flux:", value)
    if value > 200:
        print("Flare detected. Scan stopped.")
        break

# continue skips the rest of this pass and jumps to the next one
samples = [3.4, -1, 5.8, -1, 7.2]
total = 0
good = 0
for sample in samples:
    if sample == -1:
        print("Dropout, skipping this one")
        continue
    total = total + sample
    good = good + 1
print("Averaged", good, "good samples:", round(total / good, 2))

# while True runs forever on purpose, and break is the only way out
frequency = 1420
while True:
    print("Listening at", frequency, "MHz")
    frequency = frequency + 5
    if frequency > 1435:
        print("Band swept. Receiver off.")
        break
Open the full example
script.py
PythonLn 1, Col 1Spaces: 4
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Separate arguments with commas. They're passed on every Run as sys.argv[1:].