final commit v1.0

Author: aushafy

empty.txt

@@ -0,0 +1,2 @@
+I love programming!
+I love Python!

example.txt

@@ -0,0 +1 @@
+i love python and i love programming

listofname.txt

@@ -0,0 +1,9 @@
+1. Agung
+2. Aushafy
+3. Rizki
+4. Ardan
+5. Hady
+6. Danny
+7. Ayyub
+8. Fahras
+9. Yunus

read-line-by-line.py

@@ -0,0 +1,8 @@
+"""
+Previously, we have been make program that can be open and read entire of file.
+in this capter, we will make another program that can be read file's content line-by-line.
+"""
+filename = 'listofname.txt' # select file by type file name
+with open(filename) as file_obj: # open file with open() function and make alias name from filename (file_obj)
+    for line in file_obj: # using for looping to read entire content line-by-line
+        print(line.rstrip()) # we used rstrip() funtion to remove trailing spaces. it makes contents readable

read-lines-in-a-list.py

@@ -0,0 +1,9 @@
+"""
+Read from a file (Cont.) is a method to storing the lines in a list.
+"""
+filename = 'listofname.txt' # select file by type file name
+with open(filename) as file_obj:
+    lines = file_obj.readlines()
+
+for line in lines:
+    print(line.rstrip())

read.py

@@ -0,0 +1,12 @@
+"""
+Reading an entire file at once.
+
+Algorithm: Open file with open() function and then read content of the file with read() function
+"""
+
+filename = 'listofname.txt' # select file
+
+with open(filename) as file_obj: # open file with open() function
+    content = file_obj.read() # read entire content of file with read() function
+
+print(content)

write-append-to-file.py

@@ -0,0 +1,6 @@
+"""
+another write program function to add some text in the file which has the content before.
+"""
+filename = "listofname.txt" # type file name which you want to add some text inside that
+with open(filename, "a") as file_obj: # open() function with 'a' argument to appending text in file which has content
+    file_obj.write("\n9. Yunus") # sample instance

write-read-example.py

@@ -0,0 +1,26 @@
+"""
+This program was made to write-and-read data in some file.
+User is allowed to input some text inside some file and check wheter the text already write successfully.
+
+Algorithm:
+1. User input file name that will be selected for the write-operation.
+2. After that, we will make sure that file was successfully opened
+3. If the file already successfully opened. next, user can input some text
+4. If user input some text successfully, it will be automatically writes in file which selected before.
+5. Last, checking wheter text is successfully write inside the text or nope.
+"""
+
+filename = input('Select file that you want to write-read: ') # user should select some file
+with open(filename, 'w') as file_object: # open file function with 'w' argument to allows write some text
+    print('File has been opened successfully!\n') # if file successfully opened, this program will be shown
+    text = input('Text that you want to add: ') # if file has been successfully opened. 
+    # it will be allowed user to input some text
+    file_object.write(text) # write function to write text to file
+
+# make sure that we have successfully add some text inside that file with read function
+with open(filename) as read_object: # again, we open the file
+    content = read_object.read() # read function to check wheter there is any text inside that file
+
+if text in content: # check wheter text already added successfully.
+    print('You have been successfully to add text to your file!') # if text successfully added. print text!
+    print('Your text : ' + text)

write.py

@@ -0,0 +1,9 @@
+"""
+Simple program to write an instance to a file.
+
+open() argument: 'w' to write in empty file, 'a' to appending to a file.
+"""
+filename = 'empty.txt' # select file that you want to add some text inside.
+with open(filename, 'w') as file_obj: # open function with 'w' argument it is mean you will add some text in empty file
+    file_obj.write("I love programming!\n") # write() function to writes some text inside files
+    file_obj.write("I love Python!\n") # to write multiple lines with \n in the end of line