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प्रश्न
Write the rules to be followed to format the data in a CSV file.
उत्तर
1. Each record (row of data) is to be located on a separate line, delimited by a line break by pressing the enter key.
Example:
xxx.yyy↵(↵denotes enter Key to be pressed)
2. The last record in the file may or may not have an ending line break.
Example:
ppp,qqq↵
yyy, xxx
3. There may be an optional header line appearing as the first line of the file with the same format as normal record lines. The header will contain names corresponding to the fields in the file and should contain the same number of fields as the records in the rest of the file.
Example:
field_name 1,field_name2,field_name3
zzz,yyy, xxx CRLF(Carriage Return and Line Feed)
4. Within the header and each record, there may be one or more fields, separated by commas. Spaces are considered part of a field and should not be ignored. The last field in the record must not be followed by a comma.
Example:
Red, Blue
5. Each field mayor may not be enclosed in double-quotes. If fields are not enclosed with double quotes, then double quotes may not appear inside the fields
Example.
“Red”,” Blue”,” Green”↵ #Field data with” ‘
Black, White, Yellow #Field data without double quotes
6. Fields containing line breaks (CRLF), double quotes, and commas should be enclosed in double quotes.
Example:
Red, Blue, Green
7. If double-quotes are used to enclose fields, then a double-quote appearing inside a field must be preceded with another double quote.
Example:
“Red,” “Blue”, “Green”
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संबंधित प्रश्न
Mention the two ways to read a CSV file using Python.
Mention the default modes of the File.
Write a Python program to read a CSV file with default delimiter comma (,).
What is the difference between the write mode and append mode?
What is the difference between reader() and DictReader() function?
Write the different methods to read a File in Python.
What is the advantage of using a CSV file for permanent storage? Write a Program in Python that defines and calls the following user-defined functions:
- ADD() - To accept and add data of an employee to a CSV file ‘record.csv’. Each record consists of a list with field elements such as empid, name, and mobile to store an employee id, employee name, and employee salary respectively.
- COUNTR() - To count the number of records present in the CSV file named ‘record.csv’.
Give any one point of difference between a binary file and a CSV file. Write a Program in Python that defines and calls the following user-defined functions:
- add() - To accept and add data of an employee to a CSV file ‘furdata.csv’. Each record consists of a list with field elements such as fid, fname, and fprice to store furniture id, furniture name, and furniture price respectively.
- search() - To display the records of the furniture whose price is more than 10000.
Select the correct output of the code:
S="Amrit Mahotsav @ 75"
A=S.partition (" ")
print(a)Vedansh is a Python programmer working in a school. For the Annual Sports Event, he has created a csv file named Result.csv, to store the results of students in different sports events. The structure of
Result.csv is:
[St_Id, St_Name, Game_Name, Result]Where
St_Id is Student ID (integer)
ST_name is Student Name (string)
Game_Name is name of game in which student is participating(string). Result is result of the game whose value can be either 'Won', 'Lost' or 'Tie'.
For efficiently maintaining data of the event, Vedansh wants to write the following user defined functions:
Accept() - to accept a record from the user and add it to the file
Result.csv. The column headings should also be added on top of the csv file.
wonCount() - to count the number of students who have won any event.
As a Python expert, help him complete the task.
