在两个脚本(gui和main)之间传递变量

# gui.py
import os

os.environ['my_variable'] = 'Hello World'

# main.py
import os

my_variable = os.environ.get('my_variable')
print(my_variable)  # Output: Hello World

# gui.py
with open('variable.txt', 'w') as file:
    file.write('Hello World')

# main.py
with open('variable.txt', 'r') as file:
    my_variable = file.read()
print(my_variable)  # Output: Hello World

# gui.py
import subprocess

subprocess.call(['python', 'main.py', 'Hello World'])

# main.py
import sys

my_variable = sys.argv[1]
print(my_variable)  # Output: Hello World

# gui.py
import MySQLdb

# Connect to the database
db = MySQLdb.connect(host='localhost', user='username', password='password', database='mydb')

# Create a cursor object
cursor = db.cursor()

# Execute SQL query to insert the variable into the database
cursor.execute("INSERT INTO variables (name, value) VALUES ('my_variable', 'Hello World')")

# Commit the changes
db.commit()

# Close the cursor and database connection
cursor.close()
db.close()

# main.py
import MySQLdb

# Connect to the database
db = MySQLdb.connect(host='localhost', user='username', password='password', database='mydb')

# Create a cursor object
cursor = db.cursor()

# Execute SQL query to retrieve the variable from the database
cursor.execute("SELECT value FROM variables WHERE name = 'my_variable'")

# Fetch the result
result = cursor.fetchone()

# Close the cursor and database connection
cursor.close()
db.close()

my_variable = result[0]
print(my_variable)  # Output: Hello World