「\\」在os.path.join

-1

文件路徑寫pyhton程序將數據保存在.txt文件時創建的文件路徑，它的錯誤，也有「\」的路徑，爲什麼「\」在os.path.join

程序：

#storage data in .txt file 
def data_save_txt(type,data,id,name): 
    # get the date when storage data 
    date_storage() 
    #create the data storage directory 
    txt_parent_directory = os.path.join("dataset","txt",type,glovar.date) 

    directory_create(txt_parent_directory) 
    #write data in .txt 
    if type == "group_members": 
     txt_file_prefix = "gm" 
    elif type == "group_feed": 
     txt_file_prefix = "gf" 
    elif type == "public_figure_posts": 
     txt_file_prefix = "pfp" 
    elif "user_" in type: 
     txt_parent_directory = os.path.join("dataset", "txt", "user", type, glovar.date) 
     txt_file_prefix = type 
    txt_file_directory = os.path.join(txt_parent_directory,txt_file_prefix+"_"+time_storage()+"_"+id+"_"+name+".txt") 
    txt_file_object = open(txt_file_directory,"w",encoding="utf-8") 

    #to show the line number of stored data 
    line_number = 1 
    if isinstance(data,str): 
     txt_file_object.write(data) 
    elif isinstance(data,list): 
     group_info_data = '' 
     for i in range(len(data)): 
      for (k, v) in data[i].items(): 
       group_info_data = group_info_data + str(line_number) + ") " + k + ':' + str(v) + ',' 
      group_info_data += '\n' 
      line_number += 1 
     txt_file_object.write(group_info_data) 
    txt_file_object.close()

，當它運行時，它的錯誤：

Traceback (most recent call last): 
    File "C:/Python/PyCharmProject/FaceBookCrawl/FBCrawl.py", line 255, in <module> 
    user_info_download.user_info_storage(user_id,user_info_type,u_access_token) 
    File "C:\Python\PyCharmProject\FaceBookCrawl\user_info_download.py", line 79, in user_info_storage 
    data_storage.data_save_txt(type,user_info,user_id,user_name) 
    File "C:\Python\PyCharmProject\FaceBookCrawl\data_storage.py", line 29, in data_save_txt 
    txt_file_object = open(txt_file_directory,"w",encoding="utf-8") 
    FileNotFoundError: [Errno 2] No such file or directory: 'dataset\\txt\\user\\user_friends\\20170121\\user_friends_20170121-124531_110286969468305_Du Bin.txt' 

Process finished with exit code 1

它指向的是

if "user_" in type: 
     txt_parent_directory = os.path.join("dataset", "txt", "user", type, glovar.date)

這句話錯誤，在路徑中有「\」，但我用os.path.join，爲什麼，誰能幫我解決這個問題

來源

2017-01-21 bin

雙斜槓是python顯示包含斜槓的字符串表示的常用方式。您的問題更可能是因爲您的文件不存在/您當前的目錄不是您認爲的目錄。 –

如果你打印（'dataset \\ txt \\ user \\ user_friends \\ 20170121 \\ user_friends_20170121-124531_110286969468305_Du Bin.txt'）''你得到'dataset \ txt \ user \ user_friends \ 20170121 \ user_friends_20170121-124531_110286969468305_Du Bin.txt ' - 注意，沒有雙反斜槓。你看到的是'\'轉義字符本身轉義的字符串表示。 – tdelaney

我相信根據錯誤，你試着創建目錄中不存在的文件。

也就是說，問題出在目錄名稱上，而不是文件名稱上。

來源

2017-01-21 21:03:11

通過調用

txt_parent_directory = os.path.join("dataset", "txt", "user", type, glovar.date) 
txt_file_directory = os.path.join(txt_parent_directory,txt_file_prefix+"_"+time_storage()+"_"+id+"_"+name+".txt")

正在構建的文件名字符串'dataset\txt\user\user_friends\20170121\user_friends_20170121-124531_110286969468305_Du Bin.txt'雙反斜線只是Python的顯示某些特殊字符的方式。

但它不創建實際的文件夾。運行類似

os.makedirs()

在嘗試創建文件之前的目錄。

來源

2017-01-21 21:04:06

「\\」在os.path.join

回答

相關問題