有CSV-extension。你也可以在模型库中找到一个示例模型（参见CSV Example）。
扩展程序逐行读取CSV文件，因此您需要循环并将列的值逐个提取到列表中。如果您保存您的分布而不是按列而是按行保存，您的生活会更轻松一些，但当然它也适用于列。您可以使用one-of绘制该列表的随机项。
我附上了一个代码示例，说明如何解决下面的问题。

extensions [ csv ]
globals [
  step_length_ls
  turning_angles_ls
]

to read_csv
  ; close file connections
  file-close-all
  ; open your csv file
  file-open "males.csv"
  ; read first line of csv file (headers), alternatively just hardcode the index of columns
  let header csv:from-row file-read-line
  ; determine position of columns according to header
  let idx_step_col position "step_length" header
  let idx_turning_col position "turning_angles" header
  ; initialize global variables as lists
  set step_length_ls []
  set turning_angles_ls []  
  
  ; read data in via a while loop
  while [ not file-at-end? ] [
    ; here the CSV extension grabs a single line and puts the data of that in the data variable (list)
    let data csv:from-row file-read-line
    ; append the values to the global list
    set step_length_ls lput (item idx_step_col data) step_length_ls
    set turning_angles_ls lput (item idx_turning_col data) turning_angles_ls
  ]
end

to step 
  fd one-of step_length_ls
end 

to turn_turtle 
  ; not sure if fd is what you want here, but according to your pseudocode it is
  fd one-of turning_angles_ls 
end

to setup
  read_csv
  create-turtles 1
end

to go 
  ask turtles [step turn_turtle]
end

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