来自CSV的Pandas Dataframe无法正确显示

Question

I'm trying to import a csv file (25MB - 80000 rows) into pandas dataframe but it's not displaying correctly. The columns are seperated with a ';' when calling df.columns .

  Originated GeoZone;Booking ...                                                                                                                                                                                                                                                                                                                                                          
1  PARIS;PARIS;;MARKer;EQDff;...                                                                                                                                                                                                                                                                                                                                                                                              
2  PARIS;PARIS;;MARKer;EQDff;...                                                                                                                                                                                                                                                                                                                                                                                              
3  PARIS;PARIS;;MARKer;EQDff;...                                                                                                                                                                                                                                                                                                                                                                                             
4  PARIS;PARIS;;MARKer;EQDff;...  

The csv file is perfectly clear on Excel. Why is it not well interpreted by pandas.

Answer 1

This problem might be caused by different separator in Excel, it depends usually on country you are from.

You can try this:

pd.read_csv("your file", sep = ";")

This should works.

Theory: this is caused by different separators for csv files. Python use comma by default, but some files might use something other the comma, for example: ";" or "|".

Answer 2

Solution:

pd.read_csv('your file', sep = ';')

As @RafaelC pointed out, your default delimiter is ; , so you have to specify it separately

Answer 3

You should use delimiter or sep attribute in read_csv :

sep : str, default ','

Delimiter to use. If sep is None, the C engine cannot automatically detect the separator, but the Python parsing engine can, meaning the latter will be used and automatically detect the separator by Python's builtin sniffer tool, csv.Sniffer. In addition, separators longer than 1 character and different from '\\s+' will be interpreted as regular expressions and will also force the use of the Python parsing engine. Note that regex delimiters are prone to ignoring quoted data. Regex example: '\\r\\t'.

delimiter : str, default None

Alias for sep.

df = pd.read_csv('waka.csv', sep=';')