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Added additional data filter functions for period date wise search and specific date search #1

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179 changes: 96 additions & 83 deletions projects/Expense-Tracker/main.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
import sqlite3
import csv
from datetime import datetime


# Connect to the database
conn = sqlite3.connect("expenses.db")
Expand All @@ -10,6 +12,11 @@
select_expenses_sql = "SELECT * FROM expenses ORDER BY date;"
delete_expense_by_id_sql = "DELETE FROM expenses WHERE id=?"
update_expense_by_id_sql = "UPDATE expenses SET description=? WHERE id=?"
maximum_amount_spent_sql = "SELECT MAX(amount) FROM expenses"
minimum_amount_spent_sql = "SELECT MIN(amount) FROM expenses"
average_amount_spent_sql = "SELECT AVG(amount) FROM expenses"
total_amount_spent_sql = "SELECT SUM(amount) FROM expenses"
total_number_of_expenses_sql = "SELECT COUNT(amount) FROM expenses"

# Check if the database exists, create it if not
if not conn.execute(
Expand Down Expand Up @@ -93,7 +100,7 @@ def view_expenses():
def total_expenses():
# Calculate and display total expenses
total = conn.execute("SELECT SUM(amount) FROM expenses;").fetchone()[0]
print(f"Total expenses: {total}$")
print(f"Total expenses: Rs: {total}")


# defining function for exporting to csv
Expand Down Expand Up @@ -128,8 +135,10 @@ def data_filter():
print("1. Today")
print("2. Past Month")
print("3. Past Year")
print("4. Custom Range")
print("5. Custom Date Search")

date_option = input("Enter your choice (1, 2, or 3): ")
date_option = input("Enter your choice (1, 2, 3, 4, or 5): ")
if date_option == "1":
# Filter for today
filter_condition = "date = date('now')"
Expand All @@ -139,73 +148,44 @@ def data_filter():
elif date_option == "3":
# Filter for past year
filter_condition = "date >= date('now', '-1 year')"
elif date_option == "4":
# Custom Range
start_date = input("Enter start date (YYYY-MM-DD): ")
end_date = input("Enter end date (YYYY-MM-DD): ")
try:
datetime.strptime(start_date, '%Y-%m-%d')
datetime.strptime(end_date, '%Y-%m-%d')
filter_condition = f"date BETWEEN '{start_date}' AND '{end_date}'"
except ValueError:
print("Invalid date format. Please enter dates in YYYY-MM-DD format.")
return
elif date_option == "5":
# Custom Date Search
specific_date = input("Enter the date (YYYY-MM-DD): ")
try:
datetime.strptime(specific_date, '%Y-%m-%d')
filter_condition = f"date = '{specific_date}'"
except ValueError:
print("Invalid date format. Please enter date in YYYY-MM-DD format.")
return
else:
print("Invalid input.")
return
elif option == "2":
print("Select Amount Range:")
print("1. 0 to 500")
print("2. 500 to 2500")
print("3. 2500 and above")

amount_option = input("Enter your choice (1, 2, or 3): ")
if amount_option == "1":
# Filter for 0 to 500
filter_condition = "amount >= 0 AND amount <= 500"
elif amount_option == "2":
# Filter for 500 to 2500
filter_condition = "amount > 500 AND amount <= 2500"
elif amount_option == "3":
# Filter for 2500 and above
filter_condition = "amount > 2500"
else:
print("Invalid input.")
return
else:
print("Invalid input.")
return
# Writing a single line of sql code which takes the filter condition and returns data accordingly.
select_expenses_sql = (
f"SELECT * FROM expenses WHERE {filter_condition} ORDER BY date;"
)
expenses = conn.execute(select_expenses_sql).fetchall()

if not expenses:
print("No expenses recorded based on the selected filter.")
else:
print("Filtered Expenses:")
for expense in expenses:
print(
f"ID: {expense[0]}, Date: {expense[1]}, Description: {expense[2]}, Amount: Rs: {expense[3]}"
)


def data_filter():
print("Select Filter Option:")
print("1. Filter by Date")
print("2. Filter by Amount")

option = input("Enter your choice (1 or 2): ")

if option == "1":
print("Select Date Range:")
print("1. Today")
print("2. Past Month")
print("3. Past Year")
# Writing a single line of sql code which takes the filter condition and returns data accordingly.
select_expenses_sql = (
f"SELECT * FROM expenses WHERE {filter_condition} ORDER BY date;"
)
expenses = conn.execute(select_expenses_sql).fetchall()

date_option = input("Enter your choice (1, 2, or 3): ")
if date_option == "1":
# Filter for today
filter_condition = "date = date('now')"
elif date_option == "2":
# Filter for past month
filter_condition = "date >= date('now', '-1 month')"
elif date_option == "3":
# Filter for past year
filter_condition = "date >= date('now', '-1 year')"
if not expenses:
print("No expenses recorded based on the selected filter.")
else:
print("Invalid input.")
return
print("Filtered Expenses:")
for expense in expenses:
print(
f"ID: {expense[0]}, Date: {expense[1]}, Description: {expense[2]}, Amount: Rs: {expense[3]}"
)
elif option == "2":
print("Select Amount Range:")
print("1. 0 to 500")
Expand All @@ -225,31 +205,58 @@ def data_filter():
else:
print("Invalid input.")
return

# Writing a single line of sql code which takes the filter condition and returns data accordingly.
select_expenses_sql = (
f"SELECT * FROM expenses WHERE {filter_condition} ORDER BY date;"
)
expenses = conn.execute(select_expenses_sql).fetchall()

if not expenses:
print("No expenses recorded based on the selected filter.")
else:
print("Filtered Expenses:")
for expense in expenses:
print(
f"ID: {expense[0]}, Date: {expense[1]}, Description: {expense[2]}, Amount: Rs: {expense[3]}"
)
else:
print("Invalid input.")
return
# Writing a single line of sql code which takes the filter condition and returns data accordingly.
select_expenses_sql = (
f"SELECT * FROM expenses WHERE {filter_condition} ORDER BY date;"
)
expenses = conn.execute(select_expenses_sql).fetchall()

if not expenses:
print("No expenses recorded based on the selected filter.")
else:
print("Filtered Expenses:")
for expense in expenses:
print(
f"ID: {expense[0]}, Date: {expense[1]}, Description: {expense[2]}, Amount: Rs: {expense[3]}"
)


# defined this funtion to check is database is empty or not
def is_empty():
if conn.execute(select_expenses_sql).fetchall() == []:
return True
print("The Database is empty")
else:
return False
print("The Database is not empty")


# expense analysis function
def analyse_expense():
"""
This function analyses the expense and gives the:
1. Maximum amount spent
2. Minimum amount spent
3. Average amount spent
4. Total amount spent
5. Total number of expenses
"""
print("\n***EXPENSE ANALYSIS***\n")

maximum_amount_spent = conn.execute(maximum_amount_spent_sql).fetchall()
print(f"a. Maximum amount spent = { maximum_amount_spent[0][0] }")
minimum_amount_spent = conn.execute(minimum_amount_spent_sql).fetchall()
print(f"b. Minimum amount spent = { minimum_amount_spent[0][0] }")
average_amount_spent = conn.execute(average_amount_spent_sql).fetchall()
print("c. Average amount spent = %.2f" % average_amount_spent[0][0])
total_amount_spent = conn.execute(total_amount_spent_sql).fetchall()
print(f"d. Total amount spent = { total_amount_spent[0][0] }")
total_number_of_expenses = conn.execute(total_number_of_expenses_sql).fetchall()
print(f"e. Total number of expenses = { total_number_of_expenses[0][0] }")

print("\n***END OF EXPENSE ANALYSIS***")


def main_menu():
Expand All @@ -263,9 +270,11 @@ def main_menu():
print("5. Update Expense Description")
print("6. Export Expense")
print("7. Data Filter")
print("8. Quit")
print("8. Check if the database is Empty")
print("9. Analyze Expense")
print("10. Quit")

choice = input("Enter your choice (1-8): ")
choice = input("Enter your choice (1-10): ")

if choice == "1":
add_expense()
Expand All @@ -280,9 +289,13 @@ def main_menu():
elif choice == "6":
print_csv()
elif choice == "7":
data_filter()
data_filter()
elif choice == "8":
is_empty()
elif choice == "9":
analyse_expense()
elif choice == "10":
exit(0)
else:
print("Invalid choice. Please try again.")

Expand All @@ -291,4 +304,4 @@ def main_menu():
main_menu()


conn.close()
conn.close()