Reference library

Files & data

Read and write files safely; parse JSON, CSV, and common text formats.

1 match
Files & data easy

Append a Line to a Log File in Python

Append a line to a file using a context manager and Path.open().

file-io logging pathlib
Python 
from pathlib import Path

def append_to_log(filepath, message):
    with Path(filepath).open("a") as log_file:
        log_file.write(f"{message}\n")

if __name__ == "__main__":
    log_path = "log.txt"
    append_to_log(log_path, "First entry")
    append_to_log(log_path, "Second entry")
    
    # Verify contents
  …
18 0 Open

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