返回使用Python中不同文件的某些頁面

Question

我寫了一個函數，它接受多個用戶輸入並使用輸入的數據。下面的函數是file1

def dimensions 
    f = open("file.txt", "a") 
     distance= (raw_input("Enter distance: ")) 
     height= raw_input("Enter height: ")) 
     length= raw_input("Enter length: ")) 
     f.write(fullInfo) 
     f.close() 

以下是file2。 File2電話file1與import此功能dimensions被稱爲像這樣：

def calculation(): 
     print "1- Enter dimensions" 
     print "2- Enter something else" 
     choice = raw_input("") 
     if choice == 1: 
      file1.dimensions 

我這個遇到的問題是，如果用戶不希望進入的尺寸，並錯誤地在菜單中輸入1，他仍然會必須輸入所有三個查詢。

我嘗試導入file1在file2並編寫以下代碼，以便它可以返回菜單，但是將兩個文件導入到另一個文件似乎不起作用。這在file1

if distance == 'exit': 
    file2.calculation 

任何幫助或指針編碼，我怎麼可以讓用戶脫離的問題路程，返回菜單，將不勝感激。由於

Answer 1

添加一個名爲選項0附加選項，這意味着用戶要重新啓動，並添加一個if條件來檢查，如果用戶輸入0

def dimensions 
    f = open("file.txt", "a") 
    distance= (raw_input("Enter distance: ")) 
    if distance == 0: # or any other value that may seem fit 
      # handle the situation to restart the program 
    height= raw_input("Enter height: ")) 
    length= raw_input("Enter length: ")) 
    f.write(fullInfo) 
    f.close() 

Answer 2

• fullInfo是不是在你發佈的代碼定義。
• if choice == 1:永遠不會是真的，因爲raw_input("")/choice是一個字符串，需要將其轉換爲int與1進行比較纔有意義。

在下面的代碼片段，dimensions缺少括號和冒號，distance不應該被嵌套/縮進下f = open("file.txt", "a")

def dimensions 
    f = open("file.txt", "a") 
     distance= (raw_input("Enter distance: ")) 

你實際上並不通話除非你加括號的功能。這適用於以下calculation：

if distance == 'exit': 
    file2.calculation 

「（...）在彼此（...）導入這兩個文件」被稱爲循環進口或圓形進口。有辦法使它工作，但如果可能的話最好避免它。如果你有興趣，更多關於here。

呀，對不起...我很無聊

menu.py

import json 
import os 
import get_dimensions 


def dims_load(dims_json_file): 
    """ you hand this function a filename and it returns a dictionary of dimensions """ 
    with open(dims_json_file, "r") as dims_json: 
     return json.loads(dims_json.read()) 

def dims_save(dims_dict, dims_json_file): 
    """ you hand this function a dictionary and a filename to save the dimensions """ 
    with open(dims_json_file, "w") as dims_json: 
     dims_json.write(json.dumps(dims_dict)) 

def menu(): 
    dimensions_file = "dimensions.json" 
    file_exists = os.path.isfile(dimensions_file) 
    print "1- Enter dimensions" 
    print "2- Load previous dimensions" 
    print "3- Johny's funky function!" 
    choice = raw_input() 
    try: 
     choice = int(choice) 
    except ValueError as e: 
     print "Only numbers can be entered. Error details:", str(e) 
    if choice == 1: 
     dims_dict = get_dimensions.prompt_user() 
     if "exit" in dims_dict.values(): 
      print "User chose to exit get_dimensions()" 
      menu() 
     else: 
      if file_exists: 
       print "overwriting your precious data!" 
      dims_save(dims_dict, dimensions_file) 
    elif choice == 2: 
     if file_exists: 
      print dims_load(dimensions_file) 
     else: 
      print "No dimensions file found. Can't print" 
    elif choice == 3: 
     print "Johny's funky function has yet to see the light of day..." 
    else: 
     print "I have no idea what you want. Make up your mind, human!?" 

menu() 

get_dimensions.py

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