Read CSV-Lite

读 CSV 文件

≈ 20 min · python-file-io python-strings python-lists · Open in WolfCode

Open a comma-separated file, parse each line into fields. Five lines of body — the rest is edge-case discipline.

The shape

Python · runnable

# Set up a sample file in Pyodide's virtual FS:
with open("data.csv", "w") as f:
    f.write("name,age,city\nAda,36,London\nLinus,21,Helsinki\n\nGrace,79,New York\n")

def read_csv_lite(path):
    records = []
    with open(path) as f:
        for line in f:
            line = line.strip()              # drop trailing \n
            if not line:
                continue                      # skip empty lines
            records.append(line.split(","))
    return records

for record in read_csv_lite("data.csv"):
    print(record)

Loading Python runtime (~5 MB, one-time)…