QGridLayout与QHBoxLayout和QVBoxLayout类似，相当于一个风格布局容器，可以生成一个几行几列的布局。比如生成一个5行4列布局，每行加上一按钮，几行代码可以实现。
# file: calculator.py
#!/usr/bin/python
"""
ZetCode PyQt6 tutorial
In this example, we create a skeleton
of a calculator using QGridLayout.
Author: Jan Bodnar
"""
import sys,PyQt6
from PyQt6.QtWidgets import (QWidget, QGridLayout,
QPushButton, QApplication)
class Example(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
grid = QGridLayout()
self.setLayout(grid)
names = ['Cls', 'Bck', '', 'Close',
'7', '8', '9', '/',
'4', '5', '6', '*',
'1', '2', '3', '-',
'0', '.', '=', '+']
positions = [(i, j) for i in range(5) for j in range(4)]
for position, name in zip(positions, names):
if name == '':
continue
button = QPushButton(name)
grid.addWidget(button, *position)
#self.resize(900, 600)
self.move(600, 300)
self.setWindowTitle('简易计算器')
self.setWindowIcon(PyQt6.QtGui.QIcon("logo.jpg"))
self.show()
def main():
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec())
if __name__ == '__main__':
main()
显示的内容，可以在初始化按钮时直接带上，QPushButton("选择文件")，这里是把names列表内容做一系列按钮的显示内容，位置信息可以是依次填充，也可以给出行列位置进行填充。这里是一个QWidget，如果是QMainWindow，可把这些按钮与其响应绑定，按下的数字，在状态栏上显示，或者单独设置一个LineEdit进行内容显示，然后进行简易的计算。
下面这个例子，是QGridLayout6行2列，分别加上QLable和LineEdit，就是简易的发邮件程序。
# file: review.py
#!/usr/bin/python
"""
ZetCode PyQt6 tutorial
In this example, we create a bit
more complicated window layout using
the QGridLayout manager.
Author: Jan Bodnar
Website: zetcode.com
"""
import sys,PyQt6
from PyQt6.QtWidgets import (QWidget, QLabel, QLineEdit,QPushButton,
QTextEdit, QGridLayout, QApplication)
class Example(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
title = QLabel('标题')
author = QLabel('收件人')
review = QLabel('内容')
titleEdit = QLineEdit()
authorEdit = QLineEdit()
reviewEdit = QTextEdit()
b = QPushButton("发送")
grid = QGridLayout()
grid.setSpacing(12)
grid.addWidget(title, 1, 0)
grid.addWidget(titleEdit, 1, 1)
grid.addWidget(author, 2, 0)
grid.addWidget(authorEdit, 2, 1)
grid.addWidget(review, 3, 0)
grid.addWidget(reviewEdit, 3, 1, 5, 1)
grid.addWidget(b, 6, 0)
self.setLayout(grid)
self.setGeometry(300, 300, 350, 300)
self.setWindowIcon(PyQt6.QtGui.QIcon("logo.jpg"))
self.setWindowTitle('简易邮件程序')
self.show()
def main():
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec())
if __name__ == '__main__':
main()
以前写过一个发邮件程序，申请一个163或者QQ邮箱的api key，通过上面的界面，把下面的代码与QPushButton绑定，就可以实现发邮件功能。QPushButton与代码绑定，self.b.clicked.connect(self.sent_email)，在类内部再加一个发邮件函数就可以搞定了。
smtp_server = 'smtp.qq.com'
html_msg = """
尊敬的领导：
这是黑龙江省*****************，请查收！
"""
# 创建一个带附件的实例msg
msg = MIMEMultipart()
msg['From'] = Header('黑龙江省*********') # 发送者
msg['To'] = Header('办公室、****司、*****司') # 接收者
subject = '黑龙江省**********专报'
msg['Subject'] = Header(subject, 'utf-8') # 邮件主题
# 邮件正文内容
msg.attach(MIMEText(html_msg, 'html', 'utf-8'))
att = MIMEBase('application', 'octet-stream')
att.set_payload(open(filename1, 'rb').read())
att.add_header('Content-Disposition', 'attachment', filename=('gbk', '', filename) )
encoders.encode_base64(att)
msg.attach(att)
try:
smtpobj = smtplib.SMTP_SSL(smtp_server)
smtpobj.connect(smtp_server, 465) # 建立连接--qq邮箱服务和端口号
smtpobj.login(from_addr, password) # 登录--发送者账号和口令
smtpobj.sendmail(from_addr, to_addr, msg.as_string())
print("邮件发送成功")
time.sleep(30)
except smtplib.SMTPException:
print("无法发送邮件")
finally:
# 关闭服务器
smtpobj.quit()
python代码后台运行效率比较高，可以神不知鬼不觉就把事给办了，总感觉有点low，加上图形界面，似乎好那么一点儿。
显卡之父黄老板在某大演讲，有这么几条：
We are at the beginning of a major technological era: "Like PC, internet, mobile and cloud, but AI is far more fundamental" 我们正处于一个重大技术时代的开端：“就像 PC、互联网、移动和云一样，但人工智能更为根本”
AI will create new jobs that didn't exist before: "Like prompt engineering, AI Factory ops, and AI safety engineers." 2.AI 将创造以前不存在的新工作：“比如快速工程、人工智能工厂运营和人工智能安全工程师。”
AI will change every job: "Supercharging the performance of programmers, designers, artists, marketers, and manufacturing planners" 3.AI 将改变每一份工作：“提高程序员、设计师、艺术家、营销人员和制造规划人员的绩效”
You must learn to take advantage of AI: "While some worry AI may take their jobs, someone who is expert with AI will" 你必须学会利用人工智能：“虽然有些人担心人工智能可能会抢走他们的工作，但人工智能专家会”
Overall, AI software has opened multi-trillion dollar opportunities: "The world was simpler when I graduated college" 总体而言，人工智能软件已经开辟了数万亿美元的机会：“大学毕业时，世界更简单”
Nvidia's purpose: "To help the Einstein and DaVinci's of our time do their life's work" 英伟达的宗旨：“帮助我们这个时代的爱因斯坦和达芬奇完成他们一生的工作”
Nvidia almost died in its first years: Jensen had to call the CEO of Sega and say "that they had to find another partner (because our tech failed) but I needed Sega to pay us in whole or Nvidia would be out of business" 英伟达在最初的几年几乎死了：詹森不得不打电话给世嘉的首席执行官说：“他们必须找到另一个合作伙伴（因为我们的技术失败了），但我需要世嘉全额支付我们，否则英伟达就会倒闭。
Humility abut his weakness led to his success: Flying to Taiwan and working with Morris Chang on production (where Nvidia was weak) enabled their position today 25 years later 谦卑与他的软弱导致了他的成功：飞往台湾并与 Morris Chang 合作进行生产（英伟达在英伟达的实力较弱的地方）使他们在 25 年后获得了今天的地位。
Nvidia had to endure years of $1B market cap: Because they were investing in CUDA that created the base for the applications on top of GPUs like blockchain and AI 英伟达不得不忍受多年的10亿美元市值：因为他们正在投资CUDA，为区块链和人工智能等 GPU 之上的应用程序奠定了基础。
Alexnet, trained on GPUs of Nvidia, in 2012 started the big bang of AI; Nvidia risked everything by doubling down on it and deep learning. Alexnet，在英伟达的 GPU 上接受培训，在 2012 年开始了人工智能的大爆炸；英伟达冒着一切风险，加倍投入和深度学习。
Sacrificing the profitable mobile market setup the AI opportunity: Nvidia had to leave a profitable business to focus on AI and robotics. 牺牲有利可图的移动市场设置人工智能机会：英伟达不得不离开盈利的业务，专注于人工智能和机器人技术。
We are the starting line of AI: "Every industry will be revolutionized...Run after it" And why was he at the night market? "Either you are running for food, or you are... food." 我们是人工智能的起跑线：“每个行业都将发生革命性的变化...... 追着它跑” 他为什么会出现在夜市？“要么你是在为食物而奔跑，要么你...... 食物。
