Question

我有用于在另一个列表中打印嵌套列表的模块：

import sys

def custom_print(the_list, indent=False, level=0, fh=sys.stdout):

    for each_item in the_list:
        if isinstance(each_item, list):
            custom_print(each_item, indent, level+1, fh)
        else:
            if indent:
                for tab_stop in range(level):
                    print("\t", end="", file=fh)
            print(each_item, file=fh)

我尝试在一个程序中导入此模块，该程序用于将文本文件打印到两个单独的列表中。然后我想把这些列表写到我硬盘上的两个文件中。

import listsprint

man = []
other = []

try:
    data = open("speech.txt")
    for each_line in data:        
        try:
            (role, line_spoken) = each_line.split(":", 1)
            line_spoken = line_spoken.strip()
            if role == "Man":
                man.append(line_spoken)
            elif role == "Other Man":
                other.append(line_spoken)               
        except ValueError:
            pass
    data.close()

except IOError:
    print("The data file is missing")

try:
    with open("man_data.txt", "w") as man_file:
        listsprint.custom_print(man, file=man_file)
    with open("other_data.txt", "w") as other_file:
        listsprint.custom_print(other, file=other_file)

except IOError as err:
    print("File error: " + str(err))

但是当我运行程序时，会发生异常。

Traceback (most recent call last):
  File "C:\....\....\Desktop\drills\chapter3\speech.py", line 26, in <module>
    listsprint.custom_print(man, file=man_file)    
TypeError: custom_print() got an unexpected keyword argument 'file'

Answer 1

与错误一样，您的custom_print函数不接受file参数。您是否意味着使用fh代替？

自定义函数出现意外的关键字参数

1 个答案: