python - Julia UndefVarError : unshift! 未定义

Question

我使用 julia 1.4，并运行以下代码:

using PyCall
using JLD
using ArgParse
using Pandas
@pyimport networkx as nx
@pyimport scipy.sparse.csgraph as csg
@pyimport numpy as np

unshift!(PyVector(pyimport("sys")["path"]), "")
# unshift!(PyVector(pyimport("sys")["path"]), "..")
unshift!(PyVector(pyimport("sys")["path"]), "combinatorial")
@pyimport utils.load_graph as lg
@pyimport utils.distortions as dis
@pyimport graph_util as gu
....

当我运行此代码时，出现以下错误:

 ERROR: LoadError: UndefVarError: unshift! not defined
Stacktrace:
 [1] top-level scope at /root/hyperbolics/combinatorial/comb.jl:9
 [2] include(::Module, ::String) at ./Base.jl:377
 [3] exec_options(::Base.JLOptions) at ./client.jl:288
 [4] _start() at ./client.jl:484
in expression starting at /root/hyperbolics/combinatorial/comb.jl:9

当我搜索文件时，unshift!是 julia 1.4 中的现有函数，所以我不明白为什么会发生此错误。我是 Julia 的新手，请帮忙。

Answer 1

unshift! is existing function in julia 1.4

你在哪里看到这个的？它在两年前为 Julia 1.0 重命名为 pushfirst! :

julia> pushfirst!([1, 2, 3], 4)
4-element Array{Int64,1}:
 4
 1
 2
 3