1/18/2024 0 Comments Create csv file python![]() We can use a for loop to display lines in the file. It will show following contents: Seema,22,45 Anil,21,56 Mike,20,60Instead of iterating over the list we could also have used writerows() method. > csvfile=open(marks.csv','w', newline='') > obj=csv.writer(csvfile) > obj.writerows(marks) > obj.close()reader():This function returns a reader object which is an iterator of lines in the csv file. A list of tuples is then written to file using writerow() method.> import csv > marks= > csvfile=open(marks.csv','w', newline='') > obj=csv.writer(csvfile) > for row in marks: obj.writerow(row) > csvfile.close()This will create ‘marks.csv’ file in current directory. First parameter to the function is a file opened in ‘w’ mode. ![]() The function also allows additional formatting parameters to be specified.To start writing CSV file create the writer class using following statement:> import csv > csvfile=open(file.csv','w', newline='') > obj=csv.writer(csvfile)The writer class has following methods:writerow():This function writes items in a sequence (list, tuple or string) separating them by comma character.writerows():This function writes each sequence in a list as a comma separated line of items in the file.Here is an example of writer() function. Alternate dialect parameter can be specified if required. To prevent additional line between rows, newline parameter is set to ''.The writer() function by default uses 'excel' dialect. Every row written in the file issues a newline character by default. The function needs a file object created with open() function and with write permission as a parameter. writer():This function in csv module returns a writer object that converts data into a delimited string and stores in a file object. The csv module in Python’s standard library presents classes and methods to perform read/write file operations in CSV format. Python Tutorial By KnowledgeHut CSV (stands for comma separated values) format is a commonly used data format used by spreadsheets and databases.
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