python os.walk脚本的路径连接错误

我拼凑了一个脚本，它遍历一个目录并将内容上传到postgres DB

它基本上是有效的，除了我在一些文件中遇到了一个错误——而不是其他文件。在遇到此错误之前，我成功加载了43个文件

这就是我遇到的错误--看起来它在抛出错误的文件的路径名中加倍了“\”：

Traceback (most recent call last):
  File "uploader_script.py", line 136, in <module>
    main()
  File "uploader_script.py", line 69, in main
    filestat = os.stat(os.path.join(root, name))
WindowsError: [Error 3] The system cannot find the path specified: 'C:\\Data\\04-09-2018-upload\\Data - Educational - Statistics - Standardized Exam Scores\\United States\\Data - Minnesota\\The Act - Profile Report - State Graduating Class 2016 Minnesota [MN_ACT_Profile_Report]\\._The Act - Profile Report - State Graduating Class 2016 Minnesota [MN_ACT_Profile_Report].pdf'

---

您是否尝试过先使用

normpath

？例如，path.normpath（原始路径）？对路径进行赋范？我刚刚尝试了normpath，但没有成功。可能文件名开头的“点”让Windows感到困惑？重命名该文件，在扩展名之前只保留点，看看这是否解决了问题。我不知道从何处获取点--这是文件夹中的文件名：Act-Profile Report-State grading Class 2016明尼苏达州[MN_Act_Profile_Report].pdf

"""A tool for saving files to and from a postgresql db.

            *** THIS IS WRITTEN FOR PYTHON 2.7 ***
"""

# To use it for the current directory, run this in the command line:
# python uploader_script.py .\ --store


import os
import sys
import argparse
import psycopg2
import time
import datetime
import msvcrt as m

db_conn_str = "postgresql://xxx:xxx@111.11.111.1:5432/DBname"

# Define your table schema
create_table_stm = """
CREATE TABLE IF NOT EXISTS data_warehouse (
    id serial primary key,
    orig_filename text not null,
    file_extension text not null,
    created_date date not null,
    last_modified_date date not null,
    upload_timestamp_UTC timestamp not null,
    uploaded_by text not null,
    file_size_in_bytes integer not null,
    original_containing_folder text not null,
    file_data bytea not null
)
"""

# raw_input will be different in python3
uploaded_by = raw_input("Please, enter your [Firstname] [Lastname]: ")

if not uploaded_by:
    print "You did not enter your name.  Press ENTER to exit this script, then attempt to run the script again."
    m.getch()
    exit()
else:
    print "Thank you, " + uploaded_by + "! Please, press ENTER to upload the files."
    m.getch()

# Walk through the directory
def main():
    parser = argparse.ArgumentParser()
    parser_action = parser.add_mutually_exclusive_group(required=True)
    parser_action.add_argument("--store", action='store_const', const=True, help="Load an image from the named file and save it in the DB")
    parser_action.add_argument("--fetch", type=int, help="Fetch an image from the DB and store it in the named file, overwriting it if it exists. Takes the database file identifier as an argument.", metavar='42')
    parser.add_argument("parentdir", help="Name of folder to write to / fetch from")
    args = parser.parse_args()

    conn = psycopg2.connect(db_conn_str)
    curs = conn.cursor()

    # Run the create_table_stm code at the top of this file to generate the table if it does not already exist
    curs.execute(create_table_stm)

    for root, dirs, files in os.walk(args.parentdir):
        for name in files:
            # Store the original file path from the computer the file was uploaded from.
            joined_var = os.path.join(root)
            original_path = os.path.abspath(joined_var)

            # Set the file the script is looking at to a variable for later use to pull filesize
            filestat = os.stat(os.path.join(root, name))

            # Split the file extension from the filename
            file_extension_holder = os.path.splitext(name)[1]

            # Time module: https://docs.python.org/3.7/library/time.html#module-time
            # The return value is a number giving the number of seconds since the epoch (see the time module).
            # The epoch is the point where the time starts, and is platform dependent. For Windows and Unix, the epoch is January 1, 1970, 00:00:00 (UTC). 
            # To find out what the epoch is on a given platform, look at time.gmtime(0).  The code below is written for Windows.

            # Datetime module: https://docs.python.org/3/library/datetime.html

            # More info: https://stackoverflow.com/questions/237079/how-to-get-file-creation-modification-date-times-in-python            

            # Generate the created_date -- I suspect there is a more straightforward way to do this with the time or datetime module.  But this works.
            c_time_in_seconds = os.path.getctime(os.path.join(root, name))
            c_time_array = str(time.gmtime(c_time_in_seconds)[:3])
            c_date_str = ''.join(c_time_array)
            c_format_str = '(%Y, %m, %d)' 
            c_datetime_obj = datetime.datetime.strptime(c_date_str, c_format_str)
            created_date = c_datetime_obj.date()

            # Generate the last_modified_date
            m_time_in_seconds = os.path.getmtime(os.path.join(root, name))
            m_time_array = str(time.gmtime(m_time_in_seconds)[:3])
            m_date_str = ''.join(m_time_array)
            m_format_str = '(%Y, %m, %d)' 
            m_datetime_obj = datetime.datetime.strptime(m_date_str, m_format_str)
            last_modified_date = m_datetime_obj.date()

            # Generate the timestamp of the upload (in UTC timezone)
            py_uploaded_timestamp = datetime.datetime.now()



            if args.store:
                with open(os.path.join(root, name),'rb') as f:

                    # read the binary 
                    filedata = psycopg2.Binary(f.read())

                    # Call the st_size command from os.stat to read the filesize in bytes
                    filesize = filestat.st_size

                    # This has to agree with the table schema you set at the top of this file
                    curs.execute("INSERT INTO data_warehouse(id, orig_filename, file_extension, created_date, last_modified_date, upload_timestamp_UTC, uploaded_by, file_size_in_bytes, original_containing_folder, file_data) VALUES (DEFAULT,%s,%s,%s,%s,%s,%s,%s,%s,%s) RETURNING id", (name, file_extension_holder, created_date, last_modified_date, py_uploaded_timestamp, uploaded_by, filesize, original_path, filedata))
                    print curs
                    returned_id = curs.fetchone()[0]
                print("Stored {0} into DB record {1}".format(args.parentdir, returned_id))
                conn.commit()

            elif args.fetch is not None:
                with open(args.parentdir,'wb') as f:
                    curs.execute("SELECT file_data, orig_filename FROM files WHERE id = %s", (int(args.fetch),))
                    (file_data, orig_parentdir) = curs.fetchone()
                    f.write(file_data)
                print("Fetched {0} into file {1}; original parentdir was {2}".format(args.fetch, args.parentdir, orig_filename))




        for name in dirs:
            print(os.path.join(root, name))

    conn.close()        

if __name__ == '__main__':
    main()