day12 practice

4.1 package a file delete function os.remove ()
as (an example is not accurate, you need to change right):
Write the function principle :
1. The function is designed to try to short
2. function declaration to be reasonable, simple, easy to use
3. function parameters design should be considered backward compatible (version iteration - use)
4. a function of only one thing, try to ensure consistency function statement granularity

import os
"""
需求: 实现文件创建与删除
"""
def filedelect(txt_name):
    # 判断是否存在
    suffix = ".txt"
    f_name = txt_name + suffix
    txt_root = os.getcwd()+ '\\test_txt\\'+f_name
    try :
        os.remove(txt_root)
        print("{}删除成功".format(txt_name))
    except:
        print("{}未找到文件{}".format(txt_root,txt_name))

def new_txt(txt_name):
    suffix = ".txt"
    f_name = txt_name+suffix
    txt_root = os.getcwd() + '\\test_txt\\'
    if not os.path.exists(txt_root):
        os.makedirs(txt_root)
    txt_root += f_name
    if not os.path.exists(txt_root):
        Open (txt_root, "W") 
        Print ( "{} created successfully" .format (txt_name)) 
    the else: 
        Print ( "{} already exists" .format (txt_name)) 

DEF main (): 
    the while True: 
        the try: 
            Print ( os.listdir (os.getcwd () + '\\ \\ test_txt')) 
        the except: 
            Print ( "folder does not exist, create the file") 
        . Print ( "action item \ n1 create a file deleting a file other 3 enter to quit ") 
        Work = the iNPUT (" Please enter the action item \ the n-") 
        IF Work ==" 1 ": 
            txt_name the iNPUT = (" Please enter the file name to add: \ the n-") 
            new_txt (txt_name) 
        elif Work == "2": 
            FILNAME the iNPUT = ( "Please enter the deleted file name: \ n") 
            Filedelect (FILNAME) 
        the else: 
            BREAK 

# execute program entry, put it plainly, run the program from here
if __name__ == "__main__":
    main()

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