安裝相依套件

• Pandas
  • 這個安裝會花一些時間

  pipenv install pandas
  

• Plotly

  pipenv install plotly
  

• 另存圖片需要安裝 kaleido

  pipenv install kaleido
  

試用功能

• 從前一篇找到的範例，拿來修改，試做看看

  import plotly.express as px
  import pandas as pd
  
  df = pd.DataFrame([
      dict(Task = "工作1", Start = '2023-09-13', End = '2023-10-25', Assigned = "Rita", Difficulty = 70),
      dict(Task = "工作2", Start = '2023-12-03', End = '2024-02-14', Assigned = "Rita", Difficulty = 20),
      dict(Task = "工作3", Start = '2023-10-20', End = '2024-03-17', Assigned = "奴隸 A", Difficulty = 30),
      dict(Task = "工作4", Start = '2023-02-21', End = '2024-07-06', Assigned = "奴隸 B", Difficulty = 50),
      dict(Task = "工作5", Start = '2024-01-01', End = '2024-09-28', Assigned = "奴隸 C", Difficulty = 80)
  ])
  
  fig = px.timeline(df, x_start = "Start", x_end = "End", y = "Task")
  # Tasks from top to bottom
  fig.update_yaxes(autorange = "reversed") 
  # fig.show()
  fig.write_image("甘特圖.png")
  

• 圖片
  
• 上方 Task 都是同一種顏色，看不出來誰負責什麼項目，老闆看了會不開心。
• 美化一下圖片，依 Task 指派給不同的人更換顏色，更容易識別誰做了哪些事。

  fig = px.timeline(df, x_start = "Start", x_end = "End", y = "Task", color = "Assigned")