Python无法看到csv文件

Question

I went through couple answers on forum already but without any success. I am using Linux mint, Python 3.6.0 and i am trying to open CSV in Python but then error occurs:

  file = open("~/Desktop/xyz/city.csv", "rb")
FileNotFoundError: [Errno 2] No such file or directory: '~/Desktop/xyz/city.csv'

My code:

import csv

file = open("~/Desktop/xyz/city.csv", "rb")
reader =csv.reader(file)

I also tried to move the file to desktop as in some answers i found, instead of path i used "city.csv". Still doesn't work.

Completely new to Linux and just can't find why this isn't working.

Each reply appreciated!

Answer 1

You should'nt use '~' to specify the path of your directory but the full path instead. Eg :

import csv

file = open("/home/user/Desktop/xyz/city.csv", "rb")
reader =csv.reader(file)

If you need to use the tilde, you should then use os.path.expanduser('~/Desktop/xyz/city.csv') . E. g. :

import csv

file = open(os.path.expanduser("~/Desktop/xyz/city.csv"), "rb")
reader =csv.reader(file)

The reason for that is that the "tilde expansion" is a user interface feature that is not recognized by the file system: http://www.gnu.org/software/bash/manual/bashref.html#Tilde-Expansion

Answer 2

尝试使用完整的文件路径，如下所示：

file = open("/home/[username]/Desktop/xyz/city.csv", "rb")

Answer 3

Usually ~ does not expand properly. I have found that when it is needed, put $HOME environment variable value into a python variable and then use join to attach it as a prefix to the file name relative position. This also allows you to move the file to a different location and create a function that will allow you to redefine the prefix.