局部变量“Body”在赋值之前引用 - 代码中抛出错误，但是无法将原因视为“Body”；被定义

Question

此代码抛出“赋值前引用的局部变量‘Body’”错误，该错误被标记在“for x in body”上。我查看了代码，我真的很难找到错误的原因，因为该问题与我使用相同格式创建的其他条件不一致？

    bgs = ['01_BG_Blue.png', '02_BG_Red.png', '03_BG_Green.png', '04_BG_Grey.png', 
    '05_BG_Orange.png', '06_BG_Silver.png', '07_BG_Navy.png', '08_BG_Cave.png', '09_BG_Forest 
    Background.png']
    Body = ['01_Body_Wolf.png', '02_Body_Green Wolf.png','03_Body_Ice Wolf.png']
    Outfit = ['00_Outfit_Fighter.png', '01_Outfit_Spartan.png', '02_Outfit_Black belt 
    Fighter.png']
    Weapons = ['00_Weapons_Sword 1.png', '01_Weapons_Axe.png' '02_Weapons_Quiver.png' 
    '03_Weapons_Sword 2.png' '04_Weapons_Axe 2.png']
    mouths = ['01_Mouth_Tongue.png', '02_Mouth_Snarl.png']
    eyez = ['00_Eyes_Brown eyes.png', '01_Eyes_Grey Eyes.png', '02_Eyes_Red Eyes.png', 
    '03_Eyes_White Eyes.png', '04_Eyes_Snake Eyes.png', '05_Eyes_Future Eyes.png']
    Traits = ['00_Traits_Earring 1.png', '01_Traits_Earring 2.png', '02_Traits_Laural.png', 
    '03_Traits_Pipe.png', '04_Traits_Scar.png', '05_Traits_Crown.png']
    Fweapons = ['00_Overhead_Bow.png', '01_Overhead_Spear.png']
    def gen():
    count = 0
    while count != 5555: # size of collection, so script stops
        traits = []
        traits_names = []
        """
        Just some checks to avoid issues coming up in the big lists of traits.
        """
        for x in backgroundsList:
            if len(x) < 2:
            backgroundsList.remove(x)
        for x in BodyList:
            if len(x) < 2:
                BodyList.remove(x)
        for x in outfitList:
            if len(x) < 2:
                outfitList.remove(x)
        for x in WeaponsList:
            if len(x) < 2:
                WeaponsList.remove(x)
        for x in mouthsList:
            if len(x) < 2:
                mouthsList.remove(x)
        for x in eyesList:
            if len(x) < 2:
                eyesList.remove(x)
        for x in TraitsList:
            if len(x) < 2:
                TraitsList.remove(x)
        for x in FrontweaponsList:
            if len(x) < 2:
                FrontweaponsList.remove(x)
            
        """
        Collecting of the randomly chosen traits.
        """
        bgcheck = random.choice(backgroundsList)
        backgroundsList.remove(bgcheck)
        for x in bgs:
            if x.split('.png')[0].replace('_', ' ').replace(' ', '_', 2).split('_')[2] == 
bgcheck:
                bg = x
                break
        Bodycheck = random.choice(BodyList)
        BodyList.remove(Bodycheck)
        for x in Body:
            if x.split('.png')[0].replace('_', ' ').replace(' ', '_', 2).split('_')[2] == 
Bodycheck:
                Body = x
                break**

Answer 1

您已经在全局范围（函数外部）声明了所有列表和变量。因此，除非将它们声明为全局变量，否则无法从函数内部访问它们。

只需在函数 gen 的开头添加这一行：

global bgs,Body,Outfit,eyez....

添加要在函数中使用的所有变量名称。