python 中出现错误 SyntaxError: f-string: 表达式嵌套太深

Question

我收到此错误，我还需要在该字符串中传递变量，但它为以下代码给出了此错误：

   for i in range (0,4):
str =f'{"requests":[{"indexName":"New_Telemart","params":"query=Mobiles&maxValuesPerFacet=10&page="{i}"&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&facets=%5B%22brand_name%22%2C%22categories%22%2C%22sale_price%22%2C%22total_rating_average%22%2C%22express_delivery%22%5D&tagFilters=&facetFilters=%5B%5B%22categories%3ASmartphones%22%2C%22categories%3AMobile%20%26%20Tablets%22%5D%5D"},  {"indexName":"New_Telemart","params":"query=Mobiles&maxValuesPerFacet=10&page=0&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&hitsPerPage=1&attributesToRetrieve=%5B%5D&attributesToHighlight=%5B%5D&attributesToSnippet=%5B%5D&tagFilters=&analytics=false&clickAnalytics=false&facets=categories"}]}'
print(str)

错误：

Answer 1

我相信只需要转义大括号即可完成这项工作：

f'{{"requests":[{{"indexName":"New_Telemart","params":"query=Mobiles&maxValuesPerFacet=10&page="{i}"&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&facets=%5B%22brand_name%22%2C%22categories%22%2C%22sale_price%22%2C%22total_rating_average%22%2C%22express_delivery%22%5D&tagFilters=&facetFilters=%5B%5B%22categories%3ASmartphones%22%2C%22categories%3AMobile%20%26%20Tablets%22%5D%5D"}},  {{"indexName":"New_Telemart","params":"query=Mobiles&maxValuesPerFacet=10&page=0&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&hitsPerPage=1&attributesToRetrieve=%5B%5D&attributesToHighlight=%5B%5D&attributesToSnippet=%5B%5D&tagFilters=&analytics=false&clickAnalytics=false&facets=categories"}}]}}'

您可以阅读f-string 文档以获取更多信息