python调用cmd顺序执行命令失败

问题遇到的现象和发生背景

python调用cmd顺序执行命令失败

代码

from time import time
from openpyxl import load_workbook
from tenacity import retry
import subprocess
from tenacity import retry,stop_after_attempt
import subprocess

global i
i=0

def replace(obj):
    if obj is None:
        obj = ''
        return obj

wb = load_workbook("./csv/information.xlsx")

'''
excel.xlsx格式
Bug         Date              De
41           2022-06          g:9
41           2022-09          g:6
'''

ws = wb['Sheet1']
contexts = []
for row in range(2, ws.max_row + 1):
    bug_id = ws["A" + str(row)].value
    date_id = ws["B" + str(row)].value
    dev_id = ws["C" + str(row)].value
    context=f".\Get \"{date_id}\" -devId \"{dev_id}\" -Path \"D:\\{bug_id}.txt\""
    contexts.append(context)
print(contexts)


# for context in contexts:
#     print(context)
# s = "&" .join (contexts)
# print(s)


@retry(stop=stop_after_attempt(2))
def runcmd():
    
    ret = subprocess.run(contexts[i],shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE,encoding="utf-8",cwd=r'C:\Users\Localadmin\Desktop\GetData\')
    for i in contexts:
        if ret.returncode!=0:
            i=i+1
    if ret.returncode != 0:
        print("error:",ret)
        print('失败重试中') 
        raise Exception
    
    else:
        print("success:",ret)

runcmd('%s'%contexts[i])#字符串参数

运行结果

如果执行命令失败重试2次之后就直接报错，不会执行下一条命令

我想要达到的结果

执行命令失败后重试两次，如果还失败就执行下一条，执行成功就直接执行下一条，直到执行完所有命令

最后一句改为

try:
    runcmd('%s'%contexts[i])#字符串参数
except:
    pass

retry的用法是这样的：

from retry import retry


@retry(tries=2)
def func():
    print(1)
    raise Exception()

try:
    func()
except:
    print('重试三次仍然报错')
    # 下一个
    pass