Python自定义函数写入txt文件触发write()参数TypeError报错
问题说明
开发Python自动化测验生成工具时,用于写入多选题内容的create_multiple_choice函数运行失败,抛出如下报错:
dit_quiz_file.write(multiple_choice_question, "a") TypeError: write() takes exactly one argument (2 given)
对应出错代码片段:
def create_multiple_choice(): global edit_quiz_file multiple_choice_question = input("What would you like the question to be?") print("write the multiple choice options below\n") multiple_choice1 = input("What is the first option?") multiple_choice2 = input("What is the second option?") multiple_choice3 = input("What is the third option?") multiple_choice4 = input("What is the fourth option?") edit_quiz_file = open("mathquiz.txt", "a") edit_quiz_file.write(multiple_choice_question, "a")
错误原因
- 文件对象的
write()方法仅支持传入1个参数(即要写入的字符串内容),你误将open()函数使用的追加模式参数"a"传给了write(),参数数量不匹配触发报错。 - 现有逻辑只收集了4个选项的用户输入,没有编写选项写入文件的对应代码,就算修复参数错误,最终输出的txt文件也只会保存题干,不会显示多选选项。
- 直接调用
open()打开文件后没有执行关闭操作,容易出现文件资源泄漏、内容写入不全的问题。 - 不必要的
global全局变量声明会增加代码调试难度,文件操作不需要依赖全局变量。
修复后可运行代码
def create_multiple_choice(): multiple_choice_question = input("What would you like the question to be?") print("write the multiple choice options below\n") multiple_choice1 = input("What is the first option?") multiple_choice2 = input("What is the second option?") multiple_choice3 = input("What is the third option?") multiple_choice4 = input("What is the fourth option?") # with上下文管理器会在写入完成后自动关闭文件,无需手动调用close() with open("mathquiz.txt", "a", encoding="utf-8") as edit_quiz_file: # 写入题干后加换行 edit_quiz_file.write(f"{multiple_choice_question}\n") # 按标准多选题格式写入选项,加A/B/C/D前缀 edit_quiz_file.write(f"A. {multiple_choice1}\n") edit_quiz_file.write(f"B. {multiple_choice2}\n") edit_quiz_file.write(f"C. {multiple_choice3}\n") edit_quiz_file.write(f"D. {multiple_choice4}\n") # 题目末尾加空行,和后续题目分隔 edit_quiz_file.write("\n")
修改点说明
- 移除
write()方法中多余的"a"参数,追加写入模式仅需在open()打开文件时指定即可。 - 补全选项写入逻辑,添加选项前缀和换行符,避免所有内容挤在同一行,输出格式更规范。
- 用
with语句替代手动open()/close()流程,自动管理文件资源,避免写入异常。 - 删除冗余的全局变量声明,降低代码耦合度。
- 打开文件时指定
encoding="utf-8",避免中文内容写入时出现乱码。
内容的提问来源于stack exchange,提问作者JUNKJACKZACK
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