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sampler.py
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sampler.py
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#! python3
# python -m pip install --upgrade pymupdf python-docx
import os, re, shutil, random
import fitz, docx
CUR_DIR = os.path.dirname(__file__)
OUT_DIR = "SAMPLE"
WEEK = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
EXTS = ["rtf", "pdf", "docx"]
num_constructed_weeks = 6
def main():
sort()
reduce(2)
sample()
def sort():
"""Finds and sorts all rtf or pdf files in the working directory by weekday and date"""
files = []
dir_listing = os.scandir()
for i in dir_listing:
if i.is_file() and i.name.split(".")[-1].lower() in EXTS and "doclist" not in i.name.lower():
files.append(i.name)
dir_listing.close()
if len(files) > 0:
from tqdm import tqdm
pbar = tqdm(files, bar_format="{l_bar}{bar}", ncols=50)
for i in pbar:
pbar.set_description(f"Sorting {len(files)}")
ext = i.split(".")[-1].lower()
if ext == "rtf":
with open(i, "r") as f:
text = f.read()
elif ext == "pdf":
f = fitz.open(i)
for page in f:
text = page.get_text("text")
break # we only need the first page
f.close()
elif ext == "docx":
document = docx.Document(i)
text = "\n".join([ paragraph.text for paragraph in document.paragraphs ])
# Extracts and parses the date
from dateutil import parser
try:
date = re.search(r"([a-zA-Z]+\s\d{1,2}),\s\d{4}", text).group(0)
weekday = parser.parse(date).strftime("%A")
except AttributeError:
date = re.search(r"\d{1,2}\s[a-zA-Z]+\s\d{4}", text).group(0)
weekday = parser.parse(date).strftime("%A")
# Sorting docs by weekday
# print(f"Sorting {e+1}/{len(files)}") # simple progress bar
from_ = os.path.join(CUR_DIR, i)
to = os.path.join(CUR_DIR, weekday, date, i)
os.makedirs(os.path.dirname(to), exist_ok=True)
shutil.move(from_, to) # moves the doc to its respective weekday/date folder
else:
print("No files to sort!")
exit()
def sample():
"""Performs constructed WEEK sampling from sorted documents with n-weeks"""
print("Sampling...")
for day in WEEK:
hat = []
try:
dir_listing = os.scandir(os.path.join(CUR_DIR, day))
for i in dir_listing:
if i.is_dir():
hat.append(i.name)
dir_listing.close()
except FileNotFoundError:
print(f"Warning: no documents found for {day}")
break
# Checks whether the number of docs is enough for sampling n-weeks, otherwise uses the whole population, or errors out if no docs are found
if len(hat) > num_constructed_weeks:
sample = random.sample(hat, num_constructed_weeks)
for n in sample:
dir_listing = os.scandir(os.path.join(CUR_DIR, day, n))
for i in dir_listing:
if i.is_file():
from_ = os.path.join(CUR_DIR, day, n, i.name)
to = os.path.join(CUR_DIR, OUT_DIR, i.name)
os.makedirs(os.path.dirname(to), exist_ok=True)
shutil.move(from_, to) # Moves sampled docs to the output directory
dir_listing.close()
elif 0 < len(hat) <= num_constructed_weeks:
print(f"Warning: using whole day's population for {day}")
for N in hat:
dir_listing = os.scandir(os.path.join(CUR_DIR, day, N))
for i in dir_listing:
if i.is_file():
from_ = os.path.join(CUR_DIR, day, N, i.name)
to = os.path.join(CUR_DIR, OUT_DIR, i.name)
os.makedirs(os.path.dirname(to), exist_ok=True)
shutil.move(from_, to) # Moves sampled docs to the output directory
dir_listing.close()
else: # if no documents found
print(f"Error: nothing to sample!")
exit()
print("Done!")
def reduce(by):
"""Reduces the population by x before sampling"""
print("Reducing...")
# hat = []
# try:
# dir_listing = os.scandir(os.path.join(CUR_DIR, OUT_DIR))
# for i in dir_listing:
# if i.is_file():
# hat.append(i.name)
# dir_listing.close()
# except FileNotFoundError:
# print(f"Warning: no documents found! Exiting.")
# exit()
# reduced_sample = random.sample(hat, int(len(hat)/by))
# for i in reduced_sample:
# from_ = os.path.join(CUR_DIR, OUT_DIR, i)
# to = os.path.join(CUR_DIR, OUT_DIR, "DISCARDED", i)
# os.makedirs(os.path.dirname(to), exist_ok=True)
# shutil.move(from_, to) # Moves sampled docs to the output directory
for day in WEEK:
try:
with os.scandir(os.path.join(CUR_DIR, day)) as dir_listing:
for i in dir_listing:
if i.is_dir():
hat = []
with os.scandir(i.path) as subdir_listing:
for j in subdir_listing:
if j.is_file():
hat.append(j.name)
if len(hat) > 1:
reduced_sample = random.sample(hat, round(len(hat)/by))
for file in reduced_sample:
from_ = os.path.join(CUR_DIR, day, i, file)
to = os.path.join(CUR_DIR, day, i, "DISCARDED", file)
os.makedirs(os.path.dirname(to), exist_ok=True)
shutil.move(from_, to) # Moves sampled docs to the output directory
except FileNotFoundError:
pass
if __name__ == "__main__":
main()