[英]str.format() raises KeyError
The following code raises a KeyError
exception: 以下代码引发
KeyError
异常:
addr_list_formatted = []
addr_list_idx = 0
for addr in addr_list: # addr_list is a list
addr_list_idx = addr_list_idx + 1
addr_list_formatted.append("""
"{0}"
{
"gamedir" "str"
"address" "{1}"
}
""".format(addr_list_idx, addr))
Why? 为什么?
I am using Python 3.1. 我正在使用Python 3.1。
The problem is those {
and }
characters you have there that don't specify a key for formatting. 问题是那里的那些
{
和}
字符没有指定格式化的键。 You need to double them up, so change your code to: 您需要将它们加倍,因此请将代码更改为:
addr_list_formatted.append("""
"{0}"
{{
"gamedir" "str"
"address" "{1}"
}}
""".format(addr_list_idx, addr))
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