# How to print a backtrace?

**URL:** <https://discourse.julialang.org/t/how-to-print-a-backtrace/74164>\
**Category:** General Usage\
**Created:** [January 6, 2022, 10:31pm UTC](https://discourse.julialang.org/t/how-to-print-a-backtrace/74164 "2022-01-06T22:31:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cjdoris](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cjdoris/32/213133_2.png) [@cjdoris](https://discourse.julialang.org/u/cjdoris)\
**Post date:** [January 6, 2022, 10:31pm UTC](https://discourse.julialang.org/t/how-to-print-a-backtrace/74164/1 "2022-01-06T22:31:36Z")

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How can I print an error and backtrace from within a catch block, the same as if it had not been caught in the REPL?

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**Author:** ![simeonschaub](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/simeonschaub/32/216566_2.png) [@simeonschaub](https://discourse.julialang.org/u/simeonschaub)\
**Post date:** [January 7, 2022, 10:17am UTC](https://discourse.julialang.org/t/how-to-print-a-backtrace/74164/2 "2022-01-07T10:17:14Z")

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You can use the function `Base.showerror` to show the error message and `Base.show_backtrace(io, Base.catch_backtrace())` to print the stacktrack from where the current error was thrown:

```julia
julia> try
           error("some error")
       catch e
           Base.printstyled("ERROR: "; color=:red, bold=true)
           Base.showerror(stdout, e)
           Base.show_backtrace(stdout, Base.catch_backtrace())
       end
ERROR: some error
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:33
  [2] top-level scope
    @ REPL[8]:2
  [3] eval
    @ ./boot.jl:373 [inlined]
  [4] eval_user_input(ast::Any, backend::REPL.REPLBackend)
    @ REPL ~/.julia/juliaup/julia-1.7.1+0~aarch64/share/julia/stdlib/v1.7/REPL/src/REPL.jl:150
  [5] repl_backend_loop(backend::REPL.REPLBackend)
    @ REPL ~/.julia/juliaup/julia-1.7.1+0~aarch64/share/julia/stdlib/v1.7/REPL/src/REPL.jl:244
  [6] start_repl_backend(backend::REPL.REPLBackend, consumer::Any)
    @ REPL ~/.julia/juliaup/julia-1.7.1+0~aarch64/share/julia/stdlib/v1.7/REPL/src/REPL.jl:229
  [7] run_repl(repl::REPL.AbstractREPL, consumer::Any; backend_on_current_task::Bool)
    @ REPL ~/.julia/juliaup/julia-1.7.1+0~aarch64/share/julia/stdlib/v1.7/REPL/src/REPL.jl:362
  [8] run_repl(repl::REPL.AbstractREPL, consumer::Any)
    @ REPL ~/.julia/juliaup/julia-1.7.1+0~aarch64/share/julia/stdlib/v1.7/REPL/src/REPL.jl:349
  [9] (::Base.var"#930#932"{Bool, Bool, Bool})(REPL::Module)
    @ Base ./client.jl:394
 [10] #invokelatest#2
    @ ./essentials.jl:716 [inlined]
 [11] invokelatest
    @ ./essentials.jl:714 [inlined]
 [12] run_main_repl(interactive::Bool, quiet::Bool, banner::Bool, history_file::Bool, color_set::Bool)
    @ Base ./client.jl:379
 [13] exec_options(opts::Base.JLOptions)
    @ Base ./client.jl:309
 [14] _start()
    @ Base ./client.jl:495

```

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<div class="post-metadata">

**Author:** ![cjdoris](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cjdoris/32/213133_2.png) [@cjdoris](https://discourse.julialang.org/u/cjdoris)\
**Post date:** [January 7, 2022, 10:44am UTC](https://discourse.julialang.org/t/how-to-print-a-backtrace/74164/3 "2022-01-07T10:44:57Z")

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Amazing, thanks!

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<div class="post-metadata">

**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [January 7, 2022, 2:21pm UTC](https://discourse.julialang.org/t/how-to-print-a-backtrace/74164/4 "2022-01-07T14:21:46Z")

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> [@simeonschaub](#):
>
> ```julia
> Base.showerror(stdout, e)
> Base.show_backtrace(stdout, Base.catch_backtrace())
> 
> ```

More simply, you can do:

```julia
Base.showerror(stdout, e, Base.catch_backtrace())

```