将变量从脚本1传递到脚本2再传递到脚本3

Question

我试图编写一个脚本，将变量从脚本1传递到脚本2，然后脚本2使用子流程将变量传递到脚本3。但我只收到脚本1和脚本2的响应

我希望得到的是：

TOM
Dick
Harry
Hello

但我得到的是：

TOM

Hello

我使用的代码是：

脚本1

import subprocess

pythonExecutable = 'C:\\Users\\bradl\\Anaconda2\\envs\\GeoSpatial_3.6\\python.exe'
varTest_1 = "Tom"
program = 'D:\\Training\\FromCommandLine\\Script_2.py'

subprocessList1 = [pythonExecutable, program, varTest_1]
p1 = subprocess.Popen(subprocessList1, stdout=subprocess.PIPE, stdin=subprocess.PIPE)
out1, err1 = p1.communicate()
print(out1.decode('utf-8'))

脚本2

import sys
import subprocess

pythonExecutable = 'C:\\Users\\bradl\\Anaconda2\\envs\\GeoSpatial_3.6\\python.exe'
program = 'D:\\Training\\FromCommandLine\\Script_3.py'

varTest_2 = sys.argv[1]
print(str(varTest_2).upper())

varTest_3 = "Dick"

subprocessList2 = [pythonExecutable, program, varTest_3]
p2 = subprocess.Popen(subprocessList2, stdout=subprocess.PIPE, stdin=subprocess.PIPE)
out2, err2 = p2.communicate()
print(out2.decode('utf-8'))
print('Hello')

脚本3

import sys

varTest_4 = sys.argv[1]
print(varTest_4)
print(str(varTest_4).upper())
print('Harry')

任何帮助都将不胜感激