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Accepted
stefan_aus_hannover
Asked: 2023-12-02 03:34:31 +0800 CST

将字典连接到字符串

  • 772

如何在 Julia 中加入字典，类似于 Python 的一种方式：

 diction = {"DC": 4,
           "NH": 1,
           "MI": 36,
           "MO": 4989,
           "FL": 157,
           "UT": 13,
           "NV": 9,
           "CA": 110,
           "WV": 6,
           "NY": 39,
           "ME": 1,
           "SC": 26,
           "KY": 71}
stri = ' | '.join(map(lambda x: '%2.2s %5.5s' % (str(x[0]), str(x[1])), diction.items()))

我想出了什么：

diction = Dict(["DC" => 4
                "NH" => 1,
                "MI" => 36,
                "MO" => 4989,
                "FL" => 157,
                "UT" => 13,
                "NV" => 9,
                "CA" => 110,
                "WV" => 6,
                "NY" => 39,
                "ME" => 1,
                "SC" => 26,
                "KY" => 71])
stri = [@sprintf("%2.2s %5.5s | ",st,ct) for st,ct in keys(diction),values(diction)]

产量：

ERROR: syntax: invalid iteration specification

输出：

DC    4 | NH    1 | MI    36 | MO    4989 | FL    157 | UT    13 | NV    9 | CA    110 | WV    6 | NY    39 | ME    1 | SC    26 | KY    71
julia

1 个回答

  1. Best Answer

    在最近的 Julia 版本中，您需要使用“using Printf”引入 sprintf 宏。此外，当迭代字典时，需要将键值对括在括号中(st, ct)（Python 不需要；这也适用于枚举 for 循环）。此外，您仍然应该join在此处使用 a，否则该行将以“|”结尾 分隔器。

    这然后变成：

    using Printf
diction = Dict(["DC" => 4,
            "NH" => 1,
            "MI" => 36,
            "MO" => 4989,
            "FL" => 157,
            "UT" => 13,
            "NV" => 9,
            "CA" => 110,
            "WV" => 6,
            "NY" => 39,
            "ME" => 1,
            "SC" => 26,
            "KY" => 71])
stri = join([@sprintf("%2.2s %5.5s", st, string(ct)) for (st,ct) in diction], " | ")
println(stri)
    • 2

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