Mon premier script en Python !

file_frequency.py

# This script is destined to be executed in a directory containing a series of files with a 'yyyymmdd' naming pattern
# e.g. "20240621_212441.wav". The script will parse the date in each filename and plot the number of files per year-month.

import os
import fnmatch
import matplotlib.pyplot as plt

# create empty list
list1=[]

# select only .wav file names in current folder and populate the list
for file_name in os.listdir():
  if fnmatch.fnmatch(file_name, '*.wav'):
    list1.append(file_name)

# filter list1 by selecting 'yyyymm' and populate list2 
list2=[]
for date in list1:
  list2.append(date[0:6])

# count the number of occurences of dates per month and generate a list of tuples
from collections import Counter
word_counts = Counter(list2)
frequency = word_counts.most_common()

# sort by date and print to double-check
frequency.sort()
print("Message frequency per month:")
print(frequency)

# plot the number of messages per month over the entire range
x, y = zip(*frequency)
plt.bar(x, y)
plt.ylabel("number of messages")
plt.xlabel("year")
plt.show()