Question

我有这个功能：

#This function loads the tokens for the specified account. If the tokens are not found, it quits the script.
def selectAccountTokens():

global OAUTH_TOKEN
global OAUTH_SECRET
global CONSUMER_KEY
global CONSUMER_SECRET

if args.account == 'acc1':
    execfile('tokens/acc1.py')
    print "Account tokens were successfully loaded."

elif args.account == 'acc2':
    execfile('tokens/acc2.py')
    print "Account tokens were successfully loaded."

elif args.account == 'acc3':
    execfile('tokens/acc3.py')
    print "Account tokens were successfully loaded."

elif args.account == 'acc4':
    execfile('tokens/acc4.py')
    print "Account tokens were successfully loaded."

else:
    print "Account tokens were not found, or the argument is invalid."
    quit()

当我在不使变量OAUTH_TOKEN, OAUTH_SECRET, CONSUMER_KEY, CONSUMER_SECRET全局的情况下运行它时，它会失败。

然后我将它们作为全局变量，但是当我运行print OAUTH_TOKEN时，它仍然没有返回任何内容。

我知道我不应该使用全局变量，但如果没有全局变量，我无法想办法。即使这个函数没有填充变量。

tokens/acc1.py的内容是：

OAUTH_TOKEN = "gaergbaerygh345heb5rstdhb"
OAUTH_SECRET = "gm8934hg9ehrsndz9upnv09w5eng9utrh"
CONSUMER_KEY = "mdfiobnf9xdunb9438gj28-3qjejgrseg"
CONSUMER_SECRET = "esgmiofdpnpirenag8934qn-ewafwefdvzsvdfbf"

Answer 1

global语句不会影响execfile执行的环境。

明确传递globals()将解决您的问题：

execfile('tokens/acc1.py', globals())

顺便说一句，如果您使用string formatting operator %或str.format，if .. elif ... elif ..可以减少：

if args in ('acc1', 'acc2', 'acc3', 'acc4'):
    execfile('tokens/%s.py' % args)
    print "Account tokens were successfully loaded."
else:
    print "Account tokens were not found, or the argument is invalid."
    quit()

不能使execfile（）变量是全局变量而不是本地变量

1 个答案: