在python 3.7中使用熊猫优化数据

Question

hi i tried to open some data that i downloaded to my documents using pandas with python 3.7 but it doesnt work this is my code :

    import pandas as pd
    users=pd.read_csv("ml-100k/u.user",sep="|",names=["User ID","Age","Gender", 
    "aciation" ,"zipcode"])
    user.head()

the eror is :

    FileNotFoundError: File b'ml-100k/u.user' does not exist

how can it be that the file doesnt exist if i downloaded it ? thaks:)

Answer 1

It seems your issue is that your data file is not in the path of your python session. There are a few ways to fix this.

• First, your file has .user extension. I believe it should be a .csv extension for pd.read_csv(). Rename the file to make sure the extension and the name of the file are correct. I also advise to make the filename code friendly, substitute whitespaces for _ or - and remove non-alphanumeric characters #*/() .

• One solution is to provide the full path to the pd.read_csv() function.

   pd.read_csv("/home/user/folder/file_name.csv", sep="|",names=["User ID","Age","Gender","aciation" ,"zipcode"]) 

• If you are using ipython or jupyter notebook you can navigate to the same folder where your file is at with cd path_to_file_folder command and simply pass the file name to the command:

   pd.read_csv("file_name.csv",sep="|", names=["User ID","Age","Gender","aciation" ,"zipcode"]) 

For more robust solutions check this discussion .