Launch REPL with python -m juliacall

Author: klamike

pysrc/juliacall/__main__.py

@@ -0,0 +1,24 @@
+from juliacall import Main
+
+RED = "\033[1;31m"
+GREEN = "\033[1;32m"
+RESET = "\033[0m"
+
+import os
+path_to_banner = os.path.join(os.path.dirname(__file__), "banner.jl")
+Main.seval(f"include(\"{path_to_banner}\"); banner()")
+
+while True:
+    try:
+        line = input(f"{GREEN}juliacall> {RESET}")
+    except EOFError:
+        break
+    if not line.strip():
+        continue
+    try:
+        result = Main.seval(line)
+        if result is not None:
+            print(result)
+    except Exception as e:
+        print(f"{RED}ERROR:{RESET} {e}")
+

pysrc/juliacall/banner.jl

@@ -0,0 +1,72 @@
+# https://github.com/JuliaLang/julia/blob/fae0d0ad3e5d9804533435fe81f4eaac819895af/stdlib/REPL/src/REPL.jl#L1727C1-L1795C4
+
+function banner(io::IO = stdout; short = false)
+    if Base.GIT_VERSION_INFO.tagged_commit
+        commit_string = Base.TAGGED_RELEASE_BANNER
+    elseif isempty(Base.GIT_VERSION_INFO.commit)
+        commit_string = ""
+    else
+        days = Int(floor((ccall(:jl_clock_now, Float64, ()) - Base.GIT_VERSION_INFO.fork_master_timestamp) / (60 * 60 * 24)))
+        days = max(0, days)
+        unit = days == 1 ? "day" : "days"
+        distance = Base.GIT_VERSION_INFO.fork_master_distance
+        commit = Base.GIT_VERSION_INFO.commit_short
+
+        if distance == 0
+            commit_string = "Commit $(commit) ($(days) $(unit) old master)"
+        else
+            branch = Base.GIT_VERSION_INFO.branch
+            commit_string = "$(branch)/$(commit) (fork: $(distance) commits, $(days) $(unit))"
+        end
+    end
+
+    commit_date = isempty(Base.GIT_VERSION_INFO.date_string) ? "" : " ($(split(Base.GIT_VERSION_INFO.date_string)[1]))"
+
+    if get(io, :color, false)::Bool
+        c = Base.text_colors
+        tx = c[:normal] # text
+        jl = c[:normal] # julia
+        jc = c[:blue] # juliacall
+        d1 = c[:bold] * c[:blue]    # first dot
+        d2 = c[:bold] * c[:red]     # second dot
+        d3 = c[:bold] * c[:green]   # third dot
+        d4 = c[:bold] * c[:magenta] # fourth dot
+
+        if short
+            print(io,"""
+              $(d3)o$(tx)  | Version $(VERSION)PythonCall: $(PythonCall.VERSION)
+             $(d2)o$(tx) $(d4)o$(tx) | $(commit_string)
+            """)
+        else
+            print(io,"""               $(d3)_$(tx)
+               $(d1)_$(tx)       $(jl)_$(tx) $(d2)_$(d3)(_)$(d4)_$(tx)$(jc)               _  _ $(tx)  |  Documentation: https://juliapy.github.io/PythonCall.jl/
+              $(d1)(_)$(jl)     | $(d2)(_)$(tx) $(d4)(_)$(tx)$(jc)             | || |$(tx)  |
+               $(jl)_ _   _| |_  __ _$(jc)  ___  __ _ | || |$(tx)  |  Julia: $(VERSION)
+              $(jl)| | | | | | |/ _` |$(jc)/ __|/ _` || || |$(tx)  |  PythonCall: $(PythonCall.VERSION)
+              $(jl)| | |_| | | | (_| |$(jc) |__  (_| || || |$(tx)  |
+             $(jl)_/ |\\__'_|_|_|\\__'_|$(jc)\\___|\\__'_||_||_|$(tx)  |  This REPL is running via Python using JuliaCall.
+            $(jl)|__/$(tx)                                    |    Only basic features are supported.
+
+            """)
+        end
+    else
+        if short
+            print(io,"""
+              o  |  Version $(VERSION)PythonCall: $(PythonCall.VERSION)
+             o o |  $(commit_string)
+            """)
+        else
+            print(io,"""
+                           _
+               _       _ _(_)_               _  _   |  Documentation: https://juliapy.github.io/PythonCall.jl/
+              (_)     | (_) (_)             | || |  |
+               _ _   _| |_  __ _  ___  __ _ | || |  |  Julia: $(VERSION)
+              | | | | | | |/ _` |/ __|/ _` || || |  |  PythonCall: $(PythonCall.VERSION)
+              | | |_| | | | (_| | |__  (_| || || |  |
+             _/ |\\__'_|_|_|\\__'_|\\___|\\__'_||_||_|  |  This REPL is running via Python using JuliaCall.
+            |__/                                    |    Only basic features are supported.
+
+            """)
+        end
+    end
+end