这两天重新过了一遍 Python 的基础语法，今天花了一点时间把“那年今日”的 shell 脚本用 Python 实现一下，记录在此。
原先的 shell 脚本内容：
cd "/Users/jinhuaiyao/Library/Mobile Documents/iCloud~com~logseq~logseq/Documents/journals"
DT=`date +%m_%d`;
> ../pages/On_This_Day.md;
ls |grep "_$DT" |sort |while read file
do
echo $file |sed 's/.md//g'|sed 's/_/-/g' |sed 's/^/- -------- [[/g' |sed 's/$/]] --------/g' >> ../pages/On_This_Day.md
cat "$file" >> ../pages/On_This_Day.md
echo -e "\n" >> ../pages/On_This_Day.md
echo "-" >> ../pages/On_This_Day.md
echo "-" >> ../pages/On_This_Day.md
echo "-" >> ../pages/On_This_Day.md
done
改写以后的 Python 脚本：
import time, os, fnmatch
base_dir = "/Users/jinhuaiyao/Library/Mobile Documents/iCloud~com~logseq~logseq/Documents"
journal_dir = f"{base_dir}/journals"
filename = f"{base_dir}/pages/On_This_Day2.md"
with open(filename, 'w') as file_object:
file_object.write('')
# print(filename)
today_date_str = time.strftime("%m_%d", time.localtime()) # e.g. 02_16
# print(today_date_str)
today_date_files = []
for f_name in os.listdir(journal_dir):
"""search file to get files with this day"""
if fnmatch.fnmatch(f_name, f'*_{today_date_str}.md'):
today_date_files.append(f_name)
today_date_files.sort()
# print(today_date_files)
# from '2011_02_16.md' to get '- -------- [[2011-02-16]] --------'
# print('- -------- [[' + today_date_file[0].replace('.md','').replace('_','-') + ']] --------')
for today_date_file in today_date_files:
today_file = f"{journal_dir}/{today_date_file}"
with open(filename, 'a') as target_file, open(today_file) as source_file:
"""generate header"""
target_file.write('- -------- [[' + today_date_file.replace('.md','').replace('_','-') + ']] --------\n')
"""copy each file"""
for line in source_file:
target_file.write(line)
target_file.write('\n')
target_file.write('-\n')
target_file.write('-\n')
target_file.write('-\n')
Python 脚本写得相对少很多，先实现功能，以后再优化。