Merge pull request #2 from Mahmoud-alzoubi95/write_on_csv_files

 add write to csv file feature

Author: Noura-Alquran

CSV_files/README.md

@@ -1,10 +1,15 @@
 # Reading and Writing a CSV File
-There are various ways to read a CSV file that uses either the CSV module or the pandas library.
+* There are various ways to read a CSV file that uses either the CSV module or the pandas library.
 
 - csv Module: The CSV module is one of the modules in Python which provides classes for reading and     writing tabular information in CSV file format.
 
 - pandas Library: The pandas library is one of the open-source Python libraries that provide high-performance, convenient data structures and data analysis tools and techniques for Python programming.
 
 * **Read using csv.DictReader() class:** the CSV file is first opened using the open() method then it is read by using the DictReader class of csv module which works like a regular reader but maps the information in the CSV file into a dictionary. The very first line of the file consists of dictionary keys. 
 
+* There are various classes provide by csv  module for writting to csv:
+- using csv.writer class
+- using csv.DictWritter class
 
+* **Write using cvs.DictWritter() class**: this class returns a writer object which maps directories onto output rows.
+  

CSV_files/assets/addresses.csv

@@ -1,6 +0,0 @@
-John,Doe,120 jefferson st.,Riverside, NJ, 08075
-Jack,McGinnis,220 hobo Av.,Phila, PA,09119
-"John ""Da Man""",Repici,120 Jefferson St.,Riverside, NJ,08075
-Stephen,Tyler,"7452 Terrace ""At the Plaza"" road",SomeTown,SD, 91234
-,Blankman,,SomeTown, SD, 00298
-"Joan ""the bone"", Anne",Jet,"9th, at Terrace plc",Desert City,CO,00123

CSV_files/assets/course_name.csv

@@ -0,0 +1,6 @@
+name,course
+Noura,python40python401
+Mahmoud,python401
+Nizar,python401
+Raneem,python401
+Omer,python401

CSV_files/write_csv.py

@@ -0,0 +1,33 @@
+import csv
+ 
+
+def write_to_csv_files_using_DictWriter_class(data,fields,filename):
+   
+    with open(filename, 'w') as csvfile: 
+        # creating a csv dict writer object 
+        writer = csv.DictWriter(csvfile, fieldnames = fields) 
+            
+        # writing headers (field names) 
+        writer.writeheader() 
+            
+        # writing data rows 
+        writer.writerows(data) 
+
+
+
+if __name__=="__main__":
+     # my data rows as dictionary objects 
+    mydata =[{'name': 'Noura', 'course': 'python40python401'}, 
+            {'name': 'Mahmoud', 'course': 'python401'}, 
+            {'name': 'Nizar', 'course': 'python401'}, 
+            {'name': 'Raneem', 'course': 'python401'}, 
+            {'name': 'Omer', 'course': 'python401'}, ] 
+        
+    # field names 
+    fields = ['name','course'] 
+        
+    # name of csv file 
+    filename = "CSV_files/assets/course_name.csv"
+        
+    # writing to csv file 
+    print(write_to_csv_files_using_DictWriter_class(mydata,fields,filename))