# How to know already included modules in Julia 1.x

**URL:** <https://discourse.julialang.org/t/how-to-know-already-included-modules-in-julia-1-x/22747>\
**Category:** General Usage\
**Tags:** question, module\
**Created:** [April 4, 2019, 12:28pm UTC](https://discourse.julialang.org/t/how-to-know-already-included-modules-in-julia-1-x/22747 "2019-04-04T12:28:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AtsushiSakai](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/atsushisakai/32/6559_2.png) [@AtsushiSakai](https://discourse.julialang.org/u/AtsushiSakai)\
**Post date:** [April 4, 2019, 12:28pm UTC](https://discourse.julialang.org/t/how-to-know-already-included-modules-in-julia-1-x/22747/1 "2019-04-04T12:28:59Z")

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Hi. I’m trying to know already included modules in Julia 1.x.

For example,

```
include("path/to/moduleA.jl")
include("path/to/moduleB.jl")
# I want to know module A and B have already included here.

```

Does anyone know that?

---

<div class="post-metadata">

**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [April 4, 2019, 12:36pm UTC](https://discourse.julialang.org/t/how-to-know-already-included-modules-in-julia-1-x/22747/2 "2019-04-04T12:36:55Z")

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Perhaps something like

```julia
function available_modules(; mod = Main)
    filter(names(mod; all = true, imported = true)) do m
        getproperty(mod, m) isa Module && m ≢ mod
    end
end

```

---

<div class="post-metadata">

**Author:** ![AtsushiSakai](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/atsushisakai/32/6559_2.png) [@AtsushiSakai](https://discourse.julialang.org/u/AtsushiSakai)\
**Post date:** [April 4, 2019, 12:59pm UTC](https://discourse.julialang.org/t/how-to-know-already-included-modules-in-julia-1-x/22747/3 "2019-04-04T12:59:00Z")

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Oh, cool. Thank you so much!!