added eoracle

8 files changed, 294 insertions, 0 deletions

diff --git a/comp/work/14/passwordgen.py b/comp/work/14/passwordgen.py
new file mode 100644
index 0000000..d052745
--- /dev/null
+++ b/comp/work/14/passwordgen.py
@@ -0,0 +1,33 @@
+import random, sys
+
+def randomchar():
+    num = random.randint(65, 90)
+    return chr(num)
+
+def fliprandom(char):
+    if random.randint(0,1) == 0:
+        return char.lower()
+    else:
+        return char
+
+def usenumber(char):
+    if random.randint(0,3) == 0:
+        return ord(char)
+    else:
+        return char
+
+def shift(char):
+    if random.randint(0,1) == 0:
+        return chr(random.randint(58, 63))
+    else:
+        return char
+    
+password = []
+
+for i in range(30):
+    password.append(usenumber(fliprandom(shift(randomchar()))))
+
+for i in password:
+    sys.stdout.write(str(i))
+
+print("")
diff --git a/comp/work/14/sql/database.py b/comp/work/14/sql/database.py
new file mode 100644
index 0000000..32d485c
--- /dev/null
+++ b/comp/work/14/sql/database.py
@@ -0,0 +1,229 @@
+#### database_tool.py
+
+# Import libraries:
+from tkinter import *
+from tkinter.scrolledtext import *
+import sqlite3
+import os # needed to obtain OS specific methods for navigating file structures
+
+# Global Variables
+current_database = ''
+databases = []
+textbox_colour = 'linen'
+
+#### Utility Functions
+def pretty_tables(info, body):
+    '''Called to handle SQL queries beginning with SELECT.
+       It then formats the output from sqlite3 into easy tables'''
+    column_widths = []
+    headings = []
+    
+    # work hard to get headings and put them into a list
+    # set column widths to length of heading strings
+    for row in info:
+        headings.append(row[0])
+        column_widths.append(len(row[0]))
+
+    # update column widths from body text
+    for row in body:
+        counter = 0
+        for item in row:
+            length = len(str(item))
+            if length > column_widths[counter]:
+                column_widths[counter] = length
+            counter = counter+1
+        
+    # format results with a lot of string manipulation
+    top_row = '+'
+    heading_text = '| '
+    body_text = '| '
+    for width in column_widths:
+        top_row = top_row + '-'*(width+3)
+    top_row = top_row[:-1] + '+\n'
+    
+    counter = 0
+    for item in headings:
+        padding = ' '*(column_widths[counter] - len(str(item)))
+        heading_text = heading_text + item + padding + ' | '
+        counter = counter+1
+    heading_text = heading_text + '\n'
+
+    for row in body:
+        counter = 0
+        for item in row:
+            padding = ' '*(column_widths[counter] - len(str(item)))
+            body_text = body_text + str(item) + padding + ' | '
+            counter = counter+1
+        body_text = body_text + '\n| '
+    body_text = body_text[:-2]
+        
+    text = top_row + heading_text + top_row + body_text + top_row
+    return text
+
+def update_databases():
+    '''Looks through the folder where this script is
+       found looking for database files'''
+    number_of_dbs = 0
+    files = os.listdir()
+    for file in files:
+        # select files where the last three characters are .db
+        if file[-3:] == '.db':
+            databases.append(file)
+
+#### Button functions
+def build_database():
+    '''Creates a new database and rebuilds the dropdown menu'''
+    global var
+    global current_database
+    global db_dropdown
+    db_name = db_name_textbox.get() + '.db'
+    if db_name == '.db':
+        output_textbox.insert(END, 'ERROR: Please enter a name for your new database.\n\n')
+
+    elif db_name in databases:
+        output_textbox.insert(END, 'ERROR: Database already exists.\n\n')
+    else:
+        try:
+            with sqlite3.connect(db_name) as db:
+                cursor = db.cursor()
+        except:
+            output_textbox.insert(END, 'ERROR: Please try again.\n\n')
+        else:
+            # If all OK add new name to databases list
+            databases.append(db_name)
+
+            # Now destroy current dropdown menu and rebuild it with new list.
+            db_dropdown.destroy()
+
+            var = StringVar()
+            var.set('Choose database:')
+            db_dropdown = OptionMenu(frame_buttons, var, *databases, command=choose_database)
+            db_dropdown.grid(row=0, column=0, sticky=NW)
+ 
+def choose_database(value):
+    '''Takes the appropriate database passed from the dropdown menu
+       selection and updates the current_database global variable'''
+    global current_database
+    current_database = value
+    
+def clear_output():
+    '''Empies the text in the Output textbox'''
+    output_textbox.delete(0.0, END)  # clear output text box
+
+def get_tables():
+    '''Finds a list of tables in the database'''
+    query = '''SELECT name FROM sqlite_master
+             WHERE type='table'
+             ORDER BY name;'''
+    run_sql(query)
+
+def quit_tool():
+    '''closes the window and then quits'''
+    window.withdraw()
+    window.quit()
+
+def run_query():
+    '''Collects the query string from the SQL entry textbox and runs the query'''
+    # Check database selected:
+    if current_database == '':
+        output_textbox.insert(END, 'ERROR: Please choose a database\n\n')
+    else:
+        # Fetch users SQL
+        query = sql_textbox.get(0.0, END)
+        run_sql(query)
+        sql_textbox.delete(0.0, END)  # clear output text box
+        print(query)
+
+def run_sql(sql):
+    '''Executes any SQL code passed to it and displays the output in the
+       Output textbox'''
+    # Connect to the database and run the SQL passed to this function
+    with sqlite3.connect(current_database) as db:
+        cursor = db.cursor()
+        # the cursor is required to navigate the database
+        cursor.execute(sql)
+        db.commit()
+        
+        # use fetchall() to collect result of queries
+        result = cursor.fetchall()
+
+        # if a SELECT query, process result into a table
+        if sql[:6].upper() == 'SELECT':
+            table_info = cursor.description
+            result = pretty_tables(table_info, result)
+        else:
+            result = str(result)
+            
+        result = result + '\n\n'
+        # Display the value held in the variable result in the output textbox
+        if len(result) > 50:  
+            clear_output()
+        output_textbox.insert(END, result)
+   
+##### main:
+window = Tk()
+window.title('Python Database Tool')
+
+update_databases()
+
+# Import images
+python_logo = PhotoImage(file='python-logo.gif')
+sqlite_logo = PhotoImage(file='sqlite-logo.gif')
+
+# Create frames
+frame_new_db = Frame(window)
+frame_new_db.grid(row=3, column=0, pady=20, sticky=SW)
+
+frame_buttons = Frame(window)
+frame_buttons.grid(row=0, column=0)
+
+frame_query = Frame(window)
+frame_query.grid(row=2, column=0, sticky=NW)
+
+frame_output = Frame(window)
+frame_output.grid(row=2, column=1, rowspan=2)
+
+# Add labels
+Label(frame_new_db, text='Create a new database:').grid(row=0, column=0, columnspan=2, sticky=NW)
+Label(frame_new_db, text='Choose a name: ').grid(row=1, column=0, sticky=NW)
+Label(frame_query, text='Add SQL:').grid(row=0, column=0, sticky=NW)
+Label(frame_output, text='Output: ').grid(row=0, column=0, sticky=NW)
+
+# Create database name box
+db_name_textbox = Entry(frame_new_db, width=10)
+db_name_textbox.grid(row=1, column=1, sticky=NW)
+
+# Create sql entry box
+sql_textbox = Text(frame_query, width=50, height=10, background=textbox_colour)
+sql_textbox.grid(row=1, column=0, sticky=NW)
+
+# Create scrolling textbox
+output_textbox = ScrolledText(frame_output, width=65, height=20, background=textbox_colour)
+output_textbox.grid(row=1, column=0, sticky=NW)
+
+# Add images in label widgets
+Label(window, image=python_logo).grid(row=1, column=0, sticky=NW)
+Label(window, image=sqlite_logo).grid(row=1, column=1, sticky=NW)
+
+# Add buttons
+button_quit = Button(frame_buttons, text="Quit", width=10, command=quit_tool)
+button_quit.grid(row=0, column=2, sticky=NE)
+button_clear = Button(frame_output, text="Clear result box", command=clear_output)
+button_clear.grid(row=2, column=0, sticky=NE)
+button_run = Button(frame_query, text="Run SQL", width=10, command=run_query)
+button_run.grid(row=2, column=0, sticky=NW)
+button_tables = Button(frame_buttons, text="List Tables", width=15, command=get_tables)
+button_tables.grid(row=0, column=1, sticky=NE)
+button_submit = Button(frame_new_db, text="Build database", command=build_database)
+button_submit.grid(row=2, column=0, sticky=NW)
+
+# Add dropdown menu
+var = StringVar()
+var.set('Choose database:')
+# builds dropdown from databases list but if empty (first use situation) handles this.
+db_dropdown = OptionMenu(frame_buttons, var, *databases if databases else ['empty'], command=choose_database)
+db_dropdown.grid(row=0, column=0, sticky=NW)
+
+##### Run mainloop
+window.mainloop()
+
diff --git a/comp/work/14/sql/python-logo.gif b/comp/work/14/sql/python-logo.gif
new file mode 100644
index 0000000..5d04f12
--- /dev/null
+++ b/comp/work/14/sql/python-logo.gif
diff --git a/comp/work/14/sql/sqlite-logo.gif b/comp/work/14/sql/sqlite-logo.gif
new file mode 100644
index 0000000..6338c84
--- /dev/null
+++ b/comp/work/14/sql/sqlite-logo.gif
diff --git a/comp/work/14/sql/test.db b/comp/work/14/sql/test.db
new file mode 100644
index 0000000..f32696d
--- /dev/null
+++ b/comp/work/14/sql/test.db
diff --git a/comp/work/15/1a.py b/comp/work/15/1a.py
new file mode 100644
index 0000000..6adb02f
--- /dev/null
+++ b/comp/work/15/1a.py
@@ -0,0 +1,30 @@
+def addTo(file):
+    f = open(file, "w")
+    towrite = [] 
+    line = ""
+    while line != "quit\n":
+        line = input()
+        line = line + "\n"
+        towrite.append(line)
+    towrite.remove("quit\n")
+    f.writelines(towrite)
+    f.close()
+
+def readFile(file):
+    f = open(file, "r")
+    print(*f.readlines(), sep="")
+    f.close()
+
+def readFileReverse(file):
+    f = open(file, "r")
+    towrite = ""
+    for i in f.readlines():
+        towrite = towrite + i 
+    print(towrite[::-1])
+    f.close()
+
+
+
+file = "./file"
+addTo(file)
+readFileReverse(file)
diff --git a/comp/work/15/file b/comp/work/15/file
new file mode 100644
index 0000000..f98124c
--- /dev/null
+++ b/comp/work/15/file
@@ -0,0 +1,2 @@
+this is a line
+this is another
diff --git a/electronics/eoracle b/electronics/eoracle
new file mode 160000
+Subproject d802cb8469267b92253217347407fef69d172e5