如果/ Elif / Else都在运行，即使没有遇到条件

Question

我目前有一个函数可以根据给出的错误代码（int）返回错误消息。问题是我拥有Try / Except内的所有内容，而且一切都在运行......我放了一些print，所以它们会被打印到控制台，所以我可以看到这个函数停止了...但它一直到最后，消息最终成为函数的最终定义..

代码：

# function for processing declined card errors
def declined_card(code):
"""
Take in the processor_response_code and return the proper error.

- processor_response_code supplied by Braintree on declined card
"""
try:
    # codes falling outside of the dictionary
    print "testing 1: " + code
    if 2092 <= code <= 2999:
        message = "Your payment method has been declined. Please contact your bank " \
                "for more information."
    elif code >= 3000:
        print "testing 2: " + code
        message = "There was an issue with the back-end processing network. Please try " \
                "your transaction again. If this issue persists, please contact " \
                "us using the help page."

    # codes within the dictionary
    print "testing 3: " + code
    if error_codes[code]:
        message = error_codes[code]

    return message
except KeyError:
    print "testing 4: " + code
    message = "There has been an error with payment processessing. Please contact us " \
            "using the help page for more information."

    return message