如何从 python 脚本创建多个 PlantUML 图？

Question

设想大多数说明建议您可以使用 python 生成 PlantUML 图python -m plantuml example_diagram.txt：我想创建一个 python 脚本，它在创建时生成多个 PlantUML 图，这样我就可以立即更新一组完整的图，而无需运行多个命令。示例文件以下文件用于生成 PlantUML 图：example_flow.txt内容：' http://tonyballantyne.com/graphs.html#orgheadline19' http://graphviz.org/doc/info/shapes.html' Indicate the direction of the flowchartleft to right direction' Give a block the variable name 'first' and define starting point as (*)(*) --> "The first block" as firstfirst --> "A" as A' Give the block a variable name s.t. you can just use its variable name in the next blocks  --> "D" as Dfirst --> "B" as B  --> Dfirst --> "C" as C  --> D  ' Define end point as (*)  D --> (*)Graphviz_example.txt内容：' http://tonyballantyne.com/graphs.html#orgheadline19' http://graphviz.org/doc/info/shapes.htmldigraph summary{    // initialize the variable blocks    start [label="Start with a Node"]    next [label="Choose your shape", shape=box]    warning [label="Don't go overboard", color=Blue, fontcolor=Red,fontsize=24,style=filled, fillcolor=green,shape=octagon]    end [label="Draw your graph!", shape=box, style=filled, fillcolor=yellow]    // Indicate the direction of the flowchart    rankdir=LR; // Rank direction left to right        // Create the connections    start->next    start->warning     next->end [label="Getting Better...", fontcolor=darkblue]}问题如何从单个 python 脚本创建这些图表？

Answer 1

为同一目录下的2个文件生成

创建一个以内容命名的 python 文件create_diagrams.py：

from plantuml import PlantUML

from os.path import abspath

# create a server object to call for your computations

server = PlantUML(url='http://www.plantuml.com/plantuml/img/',

                          basic_auth={},

                          form_auth={}, http_opts={}, request_opts={})

# Send and compile your diagram files to/with the PlantUML server

server.processes_file(abspath('./example_flow.txt'))

server.processes_file(abspath('./Graphviz_example.txt'))

并运行它，例如在带有 python 3.6 的 anaconda 中使用命令：python create_diagrams.py。

为目录中的所有文件生成

还可以为.txt目录中的所有文件生成图表Diagrams：

from plantuml import PlantUML

import os

from os.path import abspath

server = PlantUML(url='http://www.plantuml.com/plantuml/img/',

                          basic_auth={},

                          form_auth={}, http_opts={}, request_opts={})

# create subfolder name

diagram_dir = "./Diagrams"

# loop through all .txt files in the subfolder

for file in os.listdir(diagram_dir):

  filename = os.fsdecode(file)

  if filename.endswith(".txt"):

    # Call the PlantUML server on the .txt file

    server.processes_file(abspath(f'./Diagrams/{filename}'))

笔记

此实现需要有效的互联网连接，因为您要求 PlantUML 服务器为您生成图形。要在本地编译，您还可以下载.jarPlantUML 软件的文件并从 python 调用它来进行计算。这篇文章的问题中给出了一个更详细的例子。