Python做一个简单的在线编辑器[通俗易懂]

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from pywebio.input import *
from pywebio.output import put_text
from os import system,remove
try:
    code = textarea('Code Edit Online', code={ 
   'mode': "python",'theme': 'darcula'}, value='# input your code here\n')
    with open('temp.py','w',encoding = 'utf-8') as f:
        f.write(code)
    system('python temp.py')
    put_text('成功运行程序')
except Exception as e:
    put_text('运行：错误 at %s' % e)

主要使用了pywebio程序，实现了Python的简陋在线编辑器。
相对C++编辑器就比较复杂，需要调用g++.exe，可能在您的电脑上，就不见得能用了，需要把Dev-C++安装到我这个位置，程序才可以运行，您可以修改程序。

from pywebio.input import *
from pywebio.output import put_text
from sys import path
from os import system,remove
try:
    system('chcp 65001 >nul')
    code = textarea('Code Edit Online ( C++ )', code={ 
   'mode': "python",'theme': 'darcula',}, value='// input your code here.\n')
    with open('temp.cpp','w',encoding='utf-8') as f:
        f.write(code)
    put_text('成功运行程序')
    system(r'D:\Dev-C++\Dev-cpp\MinGW64\bin\g++.exe "%s\temp.cpp" -o "%s\temp.exe" && call "%s\temp.exe" && pause' % (path[0],path[0],path[0]))
    remove('temp.cpp')
    remove('temp.exe')
except Exception as e:
    put_text('运行：错误 at %s' % e)

运行时会报一个错，不用管它，跟咱们的程序无关。如果不是这个错，那就是您的程序有BUG。

ERROR:tornado.application:Exception in callback functools.partial(<bound method IOLoop._discard_future_result of <tornado.platform.asyncio.AsyncIOMainLoop object at 0x0000025DC4382AC8>>, <Task finished coro=<start_server_in_current_thread_session.<locals>.wait_to_stop_loop() done, defined at D:\python\lib\site-packages\pywebio\platform\tornado.py:420> exception=AttributeError("module 'asyncio' has no attribute 'all_tasks'",)>)
Traceback (most recent call last):
  File "D:\python\lib\site-packages\tornado\ioloop.py", line 741, in _run_callback
    ret = callback()
  File "D:\python\lib\site-packages\tornado\ioloop.py", line 765, in _discard_future_result
    future.result()
  File "D:\python\lib\site-packages\pywebio\platform\tornado.py", line 440, in wait_to_stop_loop
    tasks = [t for t in asyncio.all_tasks() if t is not asyncio.current_task() and not t.done()]
AttributeError: module 'asyncio' has no attribute 'all_tasks'

测试程序，直接运行第一个，输入一段Python代码：

maxNumber = 100
numbers = []
min = 2
numberSum = 0
for i in range(1,101):
    numbers.append(i)
    
while min <= maxNumber:
    is_prime = True
    for i in range(2,min):
        if (min % i) == 0:
            is_prime = False
            break
    if is_prime == True:
        numbers.remove(min)
    min += 1
print(numbers)

点击蓝色按钮，观察控制台：


成功。

再测C++，测试代码如下（C++：画桃心）：

// Author:PanDaoxi
#include <iostream>
using namespace std;
int main(){ 
   
	for(double y=1.5;y>-1.5;y-=0.1){ 
   
		for(double x=-1.5;x<1.5;x+=0.05){ 
   
			double a=x*x+y*y-1;
			char b=(a*a*a-x*x*y*y*y<=0.0?'*':' ');
			cout<<b;
		}
		cout<<endl;
	}
	
	return 0;
}

输入测试程序并提交，观察控制台：

控制台上多了个大桃心，成功运行。