Merge pull request #12 from the-code-experiments/develop

Develop

Author: hegdeashwin

codes/session_4/inputOutput.py

@@ -0,0 +1,38 @@
+# Open terminal > python3 inputOutput.py
+# Start typing below commands and see the output
+
+x = 10 * 45
+y = 20 * 90
+
+s = 'The value of x is ' + repr(x) + ' , and y is ' + repr(y)
+
+print(s)
+
+for a in range(1, 10):
+  print(repr(a).rjust(2), repr(a*a).rjust(3), end=' ')
+  print(repr(a*a*a).rjust(4))
+
+print('\n\n')
+
+for b in range(1, 10):
+  print('{0:2d} {1:3d} {2:4d}'.format(b, b*b, b*b*b))
+
+print('\n\n')
+
+import math
+print('The value of PI is approximately %5.3f' % math.pi)
+
+print('I love working on {} as well as {}!'.format('JavaScript', 'Python'))
+
+print('I love working on {0} as well as {1}!'.format('JavaScript', 'Python'))
+
+print('I love working on {1} as well as {0}!'.format('JavaScript', 'Python'))
+
+print('My name is {name}, and I\'am a {job}'.format(name='Ashwin', job='Software Engineer'))
+
+print('My name is {name}, and I love working in {0}, and {1}'.format('JavaScript', 'Python', name='Ashwin'))
+
+table = {'Ashwin': 'Engineer', 'Saju': 'Architect', 'Ajay': 'Manager'}
+
+for name, role in table.items():
+  print('{0:10} -> {1:10s}'.format(name, role))

codes/session_5/hello.txt

@@ -0,0 +1,4 @@
+Hello World!
+My name is Ashwin Hegde, I work as a Software Engineer
+My primary language is JavaScript and Secondary language is Python
+Python is needed for scripting, Machine Learning and Quantum Programming

codes/session_5/read.py

@@ -0,0 +1,7 @@
+# Open terminal > python3 read.py
+# Start typing below commands and see the output
+
+with open('hello.txt') as f:
+  data = f.read()
+  print(data)
+f.closed

codes/session_5/readline.py

@@ -0,0 +1,8 @@
+# Open terminal > python3 readline.py
+# Start typing below commands and see the output
+
+f = open('hello.txt', 'r')
+print(f.readline())
+print(f.readline())
+print(f.readline())
+

codes/session_5/sample.txt

@@ -0,0 +1 @@
+Hello World! My name is Ashwin

codes/session_5/seekTell.py

@@ -0,0 +1,18 @@
+# Open terminal > python3 seekTell.py
+# Start typing below commands and see the output
+
+f = open('sample.txt', 'r')
+
+f.seek(8, 0) # 0 mean beginning of the file
+print(f.read())
+
+print('\n\n')
+
+# f.seek(8, 1) # 1 mean current position
+# print(f.read())
+
+# print('\n\n')
+
+# f.seek(-3, 2) # 2 mean end of the file
+# print(f.read())
+

codes/session_5/write.py

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+# Open terminal > python3 write.py
+# Start typing below commands and see the output
+
+fw = open('hello.txt', 'a')
+totalWrittenChar = fw.write('\nPython is needed for scripting, Machine Learning and Quantum Programming')
+print('Total written characters are ' + repr(totalWrittenChar))
+fw.close()
+
+with open('hello.txt') as fr:
+  data = fr.read()
+  print(data)
+fr.close()

codes/session_6/errorEg1.py

@@ -0,0 +1,9 @@
+# Open terminal > python3 errorEg1.py
+# Start typing below commands and see the output
+
+while True:
+  try:
+    x = int(input('Please enter a number: '))
+    break
+  except ValueError:
+    print('Invalid number, please try again')

codes/session_6/errorEg2.py

@@ -0,0 +1,14 @@
+# Open terminal > python3 errorEg2.py
+# Start typing below commands and see the output
+
+import sys
+
+for arg in sys.argv[1:]:
+  try:
+    f = open(arg, 'r')
+    print(f.read())
+  except OSError:
+    print('[OS error]: ', arg)
+  else:
+    print(arg, 'has', len(f.readline()), 'lines')
+    f.close()

codes/session_6/errorEg3.py

@@ -0,0 +1,7 @@
+def thisWillFail():
+  x = 1 / 0
+
+try:
+  thisWillFail()
+except ZeroDivisionError as err:
+  print('Handling runtime error: ', err)