day 7 file handling program

day7_file_handling_debt_files.py

@@ -0,0 +1,25 @@
+# Required concepts: https://www.w3schools.com/python/python_file_handling.asp file handling
+import os
+
+print('Question: Find money owed to friends')
+
+def update_file(name, amount):
+  path = 'tmp/' + name + '.txt'
+  # get current amount
+  reader = open(path, 'r')
+  current_amount = int('0'+reader.read())
+  # write the new amount
+  writer = open(path, 'w')
+  writer.write(str(current_amount + amount))
+
+names = ['raj', 'riya', 'raj']
+amounts = [1000, 200, 300]
+
+# # first make empty files for all :)
+for name in names:
+  open('tmp/'+name+'.txt','w')
+
+for name, amount in zip(names, amounts):
+  update_file(name, amount)
+
+print('Made the files with total debts')

main.py

@@ -1,20 +1,27 @@
-# Required concepts: https://www.w3schools.com/python/python_intro.asp map, filter, lambda
+# Required concepts: https://www.w3schools.com/python/python_file_handling.asp file handling
+import os
 
-print('Question: prime numbers in list,')
+print('Question: Find money owed to friends')
 
-def check_prime(num):
-  for i in range(2,num):
-    if num == 1:
-      return False
-    if num%i == 0:
-      # you found a factor of num!
-      return False
-  # you didn't find any multiple, you're prime
-  return True
 
-li = [2,3,4,5,6,7,8,9]
-print(li)
+def update_file(name, amount):
+    path = 'tmp/' + name + '.txt'
+    # get current amount
+    reader = open(path, 'r')
+    current_amount = int('0'+reader.read())
+    # write the new amount
+    writer = open(path, 'w')
+    writer.write(str(current_amount + amount))
 
-primes = filter(check_prime,li)
 
-print(list(primes))
+names = ['raj', 'riya', 'raj']
+amounts = [1000, 200, 300]
+
+# # first make empty files for all :)
+for name in names:
+    open('tmp/'+name+'.txt','w')
+
+for name, amount in zip(names, amounts):
+    update_file(name, amount)
+
+print('Made the files with total debts')

tmp/raj.txt

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+1300

tmp/riya.txt

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+200