stephaniemdavis

ZIP,LAT,LNG
00601,18.180555, -66.749961
00602,18.361945, -67.175597
00603,18.455183, -67.119887
00606,18.158345, -66.932911
00610,18.295366, -67.125135
00612,18.402253, -66.711397
00616,18.420412, -66.671979
00617,18.445147, -66.559696
00622,17.991245, -67.153993

stephaniemdavis

# iterating a string and comparing it to dictionary values
# by adding the result variable, I eliminate redundant and costly printing, which is the PYTHONIC way to develop

d = {'A':'T','T':'A','C':'G','G':'C'}

for k in random_string:
    if k not in d:
       result = '{} is not valid. {} is the culprit!'.format(random_string,k)
       break    
       

stephaniemdavis

# Taken from Introduction to Computer Science - Dave Evans of Udacity
s = 'audacity' # Sample string
print(s[:3] + s[3:]
      
# Counterintuitive Example Below:      
t = 'Hi'
print(t[:3] + t[3:] # NO error message despite t's length

# Code below references the character in third index position (which doesn't exist!!)
print(t[3])

stephaniemdavis

import os,unicodecsv
# write the csv reader function
def read_csv(filename): # write a function that reads a csv
    with open(filename,'rb') as file_object: # open csv file
        reader = unicodecsv.DictReader(file_object) # dictionary object created
        return list(reader) # creating list of dictionary(reader) objects

enrolled = read_csv('enrollments.csv')
engaged = read_csv('daily_engagement.csv')
submitted = read_csv('project_submissions.csv')

stephaniemdavis

# Stephanie M. Davis. 8-1-2018 in Washington D.C. for NASA showcase event
# Just practicing list comprehensions. In the process, I FINALLY learned the futuility of assigning a NoneType method to a variable
# Build a list of the 12 months and build a new list of those months beginning with the letter 'A'

months = ['January','February','March','April','May','June','July','August','September','October','November','December']
a_months = [month for month in months if month.starswith('A')]

# just for laughs apply reverse method to a_months and assign to variable none_type and see what happens

none_type = a_months.reverse()

stephaniemdavis

The following line uses the secure copy protocol to copy a file from an aws instance to the current (".") folder of a local machine.

scp -i aws.pem username@awsip(or ALIAS):/path/to/file .

aws.pem is the key AWS provides you to gain access to the AWS instance you want to copy from.

awsip is the IP address or DNS alias of the AWS instance.

path/to/file is the file's path on aws.

It is extremely important to add the period after the /path/to/file. Note the blank space between the /path/to/file and the period.

https://stackoverflow.com/questions/9441008/how-can-i-download-a-file-from-ec2

The obverse is true too; to upload FROM local folder to aws:

stephaniemdavis

'''
Written 6-23-2018 s.m.d Implementation of EdX Introduction to Computation & Programming Using Python
Convert the following code into code that uses a for loop.
prints 2
prints 4
prints 6
prints 8
prints 10
prints "Goodbye!"
'''

stephaniemdavis

'''
Written 6-23-2018 s.m.d
Implementation of EdX Introduction to Computation & Programming Using Python
'''
# initialization state: grand_sum, incrementer, end
def sum_total(end):
    grand_sum = 0
    incrementer = 1
    end = input("Enter a positive integer please, any positive integer") # instantiate and upper limit integer
    end = int(end) # convert end to an integer type