add string formatting lab project

Author: tsegas

students/tsegas/session03/str_format_lab.py

@@ -0,0 +1,42 @@
+# String format lab execises from session-03
+# produce 'file_002 :   123.46, 1e+04'
+
+import random
+import string
+import sys
+import os
+import math
+
+#passnum function to pass the 3 numbers
+def passnum(x,y,z):
+	print("The first 3 numbers are: {:d}, {:d}, {:d}".format(x,y,z))
+	n = ('{:d}{:d}{:d}'.format(x,y,z))
+	return n
+
+#call the function
+n=passnum(x=7,y=8,z=9)
+
+# Convert the returned value to an integer
+n = int(n)
+f1 = '{:.4f}'.format(.4567).lstrip('0')
+
+# Convert to float
+f = float(f1)
+
+m = ('{:d}{:.4f}'.format(n,f).lstrip('0'))
+
+# Convert to float
+m = float(m)
+# This was the only way for now I could get rid of the leading zero
+m = (m/10)+0.41103
+
+strg = (2,m,10000)
+print("Change this............",strg)
+
+a = ('{:d}'.format(strg[0]))
+b = ('{:05.2f}'.format(strg[1]))
+# Format the last value as an exponent
+c = ('{:01.0e}'.format(strg[2]))
+
+print("To this................ file_00{} :   {},".format(a,b),c,'\n')
+