Python 業務自動化 | ファイル・フォルダ自動化：基本操作 － 特定拡張子検索

import os

folder = "data"

for name in os.listdir(folder):
    path = os.path.join(folder, name)

    if os.path.isfile(path) and name.lower().endswith(".csv"):
        print("CSV:", path)

import os

folder = "data"

for name in os.listdir(folder):
    path = os.path.join(folder, name)

    if os.path.isfile(path) and name.lower().endswith(".csv"):
        print("CSV:", path)

import os

folder = "images"

for name in os.listdir(folder):
    path = os.path.join(folder, name)

    if not os.path.isfile(path):
        continue

    if name.lower().endswith((".jpg", ".jpeg", ".png")):
        print("画像ファイル:", path)

import os

folder = "images"

for name in os.listdir(folder):
    path = os.path.join(folder, name)

    if not os.path.isfile(path):
        continue

    if name.lower().endswith((".jpg", ".jpeg", ".png")):
        print("画像ファイル:", path)

import os

root = "project"

for current, dirs, files in os.walk(root):
    for name in files:
        if name.lower().endswith(".xlsx"):
            print("Excel:", os.path.join(current, name))

import os

root = "project"

for current, dirs, files in os.walk(root):
    for name in files:
        if name.lower().endswith(".xlsx"):
            print("Excel:", os.path.join(current, name))

import os

folder = "data"
csv_files = []

for name in os.listdir(folder):
    path = os.path.join(folder, name)

    if os.path.isfile(path) and name.lower().endswith(".csv"):
        csv_files.append(path)

for f in csv_files:
    print(f)

import os

folder = "data"
csv_files = []

for name in os.listdir(folder):
    path = os.path.join(folder, name)

    if os.path.isfile(path) and name.lower().endswith(".csv"):
        csv_files.append(path)

for f in csv_files:
    print(f)

import os
import shutil

src = "logs"
dst = "logs_archive"

os.makedirs(dst, exist_ok=True)

for name in os.listdir(src):
    path = os.path.join(src, name)

    if os.path.isfile(path) and name.lower().endswith(".log"):
        new_path = os.path.join(dst, name)
        shutil.move(path, new_path)
        print("移動:", path, "→", new_path)

import os
import shutil

src = "logs"
dst = "logs_archive"

os.makedirs(dst, exist_ok=True)

for name in os.listdir(src):
    path = os.path.join(src, name)

    if os.path.isfile(path) and name.lower().endswith(".log"):
        new_path = os.path.join(dst, name)
        shutil.move(path, new_path)
        print("移動:", path, "→", new_path)

import os

root = "project"
images = []

for current, dirs, files in os.walk(root):
    for name in files:
        if name.lower().endswith((".jpg", ".jpeg", ".png")):
            images.append(os.path.join(current, name))

for img in images:
    print(img)

import os

root = "project"
images = []

for current, dirs, files in os.walk(root):
    for name in files:
        if name.lower().endswith((".jpg", ".jpeg", ".png")):
            images.append(os.path.join(current, name))

for img in images:
    print(img)

from pathlib import Path

root = Path("project")

for p in root.rglob("*.csv"):
    print("CSV:", p)

from pathlib import Path

root = Path("project")

for p in root.rglob("*.csv"):
    print("CSV:", p)