# File_IO_Demo_Write_to_File.py
#
# Anne Lavergne
# July 2015 - Modified July 2017
#
# Either ask user for a filename (and perhaps also a path)
# OR
# set your filename variables once at the top of your program
# Why?

outputFile = "newFile.txt"


# Open file for writing
fileW = open(outputFile, 'w')


# Must first convert everything to a string before writing it to a file.
# To do so, we can use the string conversion built-in function str()
value = [3, 1, 4, 1, 5, 1, 6, 1]
aString = str(value) + "\n"
numOfChars1 = fileW.write(aString)
# write() method returns the number of characters written to the file
print("Writing:\n{0}to the file '{1}'.".format(aString, outputFile))
print("Number of characters written is {}.\n".format(numOfChars1))


# or we can use string .format() method
aString = "The answer is"
aFloat = 3.14159265359
anInt = 42
myData = " {0} and perhaps {1:0.2f}.\n".format(anInt, aFloat)
numOfChars2 = fileW.write(aString+myData)
print("Writing:\n{0}to the file '{1}'.".format(aString+myData, outputFile))
print("Number of characters written is {}.\n".format(numOfChars2))
print("For a total number of {} characters written.".format(numOfChars1+numOfChars2))


# It is good programming style to always close a opened file
fileW.close( )