Python的空闲编辑器是否使用回退字体？

Question

我试图找到一种字体，支持一系列的特殊字符，而IDLE似乎有。configure IDLE菜单似乎声称它正在使用Courier New。但是，当我检查Courier New的内容时，它不支持IDLE以某种方式显示的字符。IDLE是使用经过修改的Courier New版本还是使用某种回退字体

这些是IDLE显示的字符，其中一些不在Courier New中：（例如。)

[("⌐■","■"),("°","°"),("⇀","↼"),("´•","•`"),("´","`"),("`","´"),("ó","ò"),("ò","ó"),("⸌","⸍"),("Ƹ̵̡","Ʒ"),("ᗒ","ᗕ"),("⟃","⟄"),("⪧","⪦"),
("⪦","⪧"),("⪩","⪨"),("⪨","⪩"),("⪰","⪯"),("⫑","⫒"),("⨴","⨵"),("⩿","⪀"),("⩾","⩽"),("⩺","⩹"),("⩹","⩺"),("◥▶","◀◤"),("◍","◎"),("⌣","⌣”"),
("͡⎚","⎚"),("≋","≋"),("૦ઁ","૦ઁ"),("ꗞ","ꗞ"),("ꔸ","ꔸ"),("꘠","꘠"),("ꖘ","ꖘ"),("܍","܍"),("ළ","ළ"),("◉","◉"),("☉","☉"),("・","・"),
("▰","▰"),("ᵔ","ᵔ"),("ﾟ","ﾟ"),("□","□"),("☼","☼"),("*","*"),("`","`"),("⚆","⚆"),("⊜","⊜"),(">",">"),("❍","❍"),("￣","￣"),        
("─","─"),("✿","✿"),("•","•"),("T","T"),("^","^"),("ⱺ","ⱺ"),("@","@"),("ȍ","ȍ"),("x","x"),("-","-"),("$","$"),("Ȍ","Ȍ"),("ʘ","ʘ"),
("Ꝋ","Ꝋ"),("",""),("",""),("⸟","⸟"),("๏","๏"),("ⴲ","ⴲ"),("■","■"),("ﾟﾟ"),("◕","◕"),("◔","◔"),("✧","✧"),("■","■"),("♥","♥"),
("¬","¬"),("⨶","⨶"),("⨱","⨱"),("⏓","⏓"),("⏒","⏒"),("⍜","⍜"),("⍤","⍤"),("ᚖ","ᚖ"),("ᴗ","ᴗ"),("ಠ","ಠ"),("σ","σ"),("☯","☯"),("の","の"),("￢￢"),("э","э")]

Answer 1

你的问题有两个子问题

1. 字符的像素模式是如何生成的，空闲的部分是什么？简而言之，IDLE与生成它们无关。IDLE使用tkinter，Python与tcl/tkgui框架的接口。IDLE调用tkinter.font.families以获取系统上识别的字体名称列表。这个方法调用tk，tk调用你的操作系统

我相信，为特定Unicode代码点显示的像素模式最终取决于操作系统的字体子系统，可能是由tk设置的参数修改的。字体类型（TrueFont或其他字体）也可能影响结果

1. 在特定的系统中，如何判断特定字体实际可用的字符？正如您所发现的，操作系统可能会填补一些空白，因此您可能会得到比预期多得多的结果。我想“检查内容”的意思是在一些外部引用中查找支持的字符

现在，在空闲状态下，对话框的字体测试显示仅限于ASCII的一个子集。要测试其他内容，必须在编辑器中预先生成一个测试选择并点击“应用”，或者退出并通过键盘输入或打印使用unicode转义的字符串进行测试。我希望有朝一日能通过在对话框中增加当前动态生成的测试字符的显示来改进这一点

编辑：我读过一个tcl unicode文档，它解释了tk试图用widget字体显示widget中的每个文本字符，但是如果不能，tk会尝试找到一个最匹配的字体来显示字符。因为即使搜索“应该”也不能保证成功，所以最好指定一种字体，该字体包含用户计划使用的大部分字符