6.5

# #!/usr/bin/python
#
# By dvdjaco
# Exercise 6.5
#
# Take the following Python code that stores a string:
# str = 'X-DSPAM-Confidence: 0.8475'
# Use find and string slicing to extract the portion of the string after the colon character and then use the float function to convert the extracted string into a floating point number.

string = 'X-DSPAM-Confidence: 0.8475'

pos_colon = string.find(':')
str_num = string[pos_colon + 1:]
num = float(str_num)

print num