1. 程式人生 > >Python 常用包

Python 常用包

包名 說明
NLTK 自然語言包
NumPy 科學計算庫,支援多維陣列和線性代數,在某些計算概率、標記、聚類和分類任務中使用
Matplotlib 資料視覺化的 2D 繪相簿
import sys
for dir in sys.path:
    print(dir)

import os 
current_dir = os.getcwd();
os.makedir('dir');
os.listdir('.')
stats = os.stat('new.txt');

from datetime imoort datetime
datetime.from(stats.st_atime)

impot json
f = open('city.json','rw')
cities = json.load
(f) json.dump(cities,f,indent=2) f.close import sqlite3 conn = sqlite3.connect('test.db') cursor = conn.cursor() sql = 'create table students(id int,name text,username text)' cursor.execute(sql) insert_sql = 'insert into students(id,name,username) values(:id,:name,:username)' cursor.execute(sql,'id'
:1,'name':'Tom','username':'NickName') conn.commit() select_sql = 'select * from students' results = cursor.execute(sql) students = results.fetchall() cursor.close()