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‎.gitignore‎

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slides_sources/build
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.idea
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.DS_Store

‎Examples/Session01/students.txt‎

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@@ -6,7 +6,7 @@ Brand, Ralph P : C, C++, SQL,
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Buer, Eric : matlab, VBA, SQL,
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Claessens, Michel : VBA, basic SQL, pascal, matlab
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Conde, Ousmane :
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Davis, Bryan L :
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Davis, Bryan L : Javascript, PHP, SQL, Bash
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Davis, Ian M : C++
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Evans, Carolyn J : SQL,
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Fischer, Henry B : C, VB, SQL, SAS,

‎Solutions/Session04/dict_set_solution.py‎

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# replacing the values in the original dict:
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for key, val in d.items():
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d[key] = val.count('t')
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d.update(a_dict)
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print d
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# could also do it this way.
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#for key, val in d.items():
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# d[key] = val.count('t')
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#print d
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# Create sets s2, s3 and s4 that contain numbers from zero through
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# twenty, divisible 2, 3 and 4.
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‎Students/A.Kramer/session03/ROT13_2.py‎

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'''
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Created on Oct 17, 2014
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@author: db345c
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'''
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def rot13(s):
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ret = ""
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for c in s:
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var = ord(c)
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if var >= ord("a") and var <= ord("z"):
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if var > ord("m"):
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var -= 13
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else:
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var += 13
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if var >= ord("A") and var <= ord("Z"):
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if var > ord("M"):
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var -= 13
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else:
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var += 13
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ret += chr(var)
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return ret
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if __name__ == "__main__":
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print rot13(rot13("Aleksey Kramer"))

‎Students/A.Kramer/session03/ROT13_3.py‎

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'''
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Created on Oct 17, 2014
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@author: db345c
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'''
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import string
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def rot13(s):
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dt = string.maketrans(
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz .!<>;:'",
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"NOPQRSTUVWXYZabcdefgjijklmnopqrstuvwxyzABCDEFGHIJKLM .!<>;:'")
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return string.translate("Hello World!", dt)
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if __name__ == '__main__':
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one = rot13("Zntargvp sebz bhgfvqr arne pbeare")
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two = rot13(one)
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print one
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print two
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### Does not work propery

‎Students/A.Kramer/session04/CurrentPath.py‎

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'''
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Created on Oct 23, 2014
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@author: db345c
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'''
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import os
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def printCurrentDirectory(dir1=os.getcwd()):
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""" Print the content of the directory """
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lst = os.listdir(dir1)
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print dir1
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for f in lst:
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print os.path.join(dir1, f)
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if __name__ == "__main__":
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""" Print the content of the directory """
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printCurrentDirectory()
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‎Students/A.Kramer/session04/FileCopy.py‎

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'''
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Created on Oct 23, 2014
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@author: db345c
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'''
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def fileCopy(src, dest):
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""" copy of a content of a text file into another text file """
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try:
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frm = open(src, "r")
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to = open(dest, "w")
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except IOError:
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print "Error opening either source or dest. files"
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else:
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# The actual copy
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for line in frm:
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to.write(line)
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print "Copy successful"
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try:
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frm.close()
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to.close()
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except IOError:
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print "Error closing either source or dest. files"
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if __name__ == "__main__":
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""" Copy single file """
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from1 = r"C:\Users\db345c\Desktop\Personal Folders\Eclipse_Wrokspaces\IntroToPythonUW\Week 4 Homework\sherlock.txt"
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to1 = r"C:\Users\db345c\Desktop\Personal Folders\Eclipse_Wrokspaces\IntroToPythonUW\Week 4 Homework\sherlock2.txt"
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fileCopy(from1, to1)

‎Students/A.Kramer/session04/files_lab.py‎

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'''
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Created on Oct 22, 2014
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@author: db345c
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'''
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import string
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def uniqueLanguages(filename):
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# Creating set variable
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s = set()
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# Opening the file
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try:
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f = open(filename, "r")
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except IOError:
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print "Unable to open the file " + filename
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try:
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f.close()
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except Exception:
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return
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# Populating the set
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for student in f:
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(name, lang) = student.split(":")
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lst = lang.split()
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for i, j in enumerate(lst):
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lst[i] = j.strip(string.punctuation)
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s.add(lst[i].lower())
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# Trying to close the file
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try:
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f.close()
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except IOError:
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try:
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f.close()
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except:
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return
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# cheap way of removing fixed header
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try:
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s.remove("languages")
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except KeyError:
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print "languages is not in the set"
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# print unique languages
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for i in s:
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print i.capitalize()
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if __name__ == "__main__":
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uniqueLanguages("students.txt")

‎Students/A.Kramer/session04/kakta14.py‎

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'''
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Created on Oct 17, 2014
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@author: db345c
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'''
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import string
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def kata14(filename, start):
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""" Set up variables, split lines in the groups of three, populate
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dictionary, and call function to print kata14 """
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# create dictionary
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words = {}
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# open file
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f = open(filename, "r")
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count = 0
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for line in f:
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# Split the line into separate tokens
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lst = line.split()
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# discard all the lines containing less than three words
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if len(lst) > 2:
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# Remove punctuation with string.punctuation (import string)
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for j, k in enumerate(lst):
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lst[j] = k.strip(string.punctuation)
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# split the line in the groups of three words
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lst_length = len(lst)
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for idx, i in enumerate(lst):
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# assure the last element of the list is reached, if so, break
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if idx == lst_length - 2:
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break
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else:
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# got the three strings to use and add those to the dictionary
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l = [ (lst[idx] + " " + lst[idx + 1]).strip(), lst[idx + 2].strip()]
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buildDictionary(l, words)
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count += 1
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# close file
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f.close()
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# print kata14
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printKata14(words, start)
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def buildDictionary(l, words):
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""" Populate the dictionary """
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if l[0] in words:
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words[l[0]].append(l[1])
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else:
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words[l[0]] = [l[1]]
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return words
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def printKata14(word, start):
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""" Recursively print Kata14 """
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if start in word:
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if len(word[start]) > 0:
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temp = word[start].pop()
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print start, temp,
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printKata14(word, str(start.split()[1]) + " " + temp)
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else:
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return
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if __name__ == "__main__":
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""" Execute Kata14 algorythm """
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kata14("sherlock.txt", "little use")

‎Students/A.Kramer/session04/lecture_notes.py‎

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'''
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Created on Oct 21, 2014
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@author: Aleksey
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'''
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def inClass():
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l = range(10)
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for i in range(len(l)):
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print i
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print
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# iterate over the tuples in the list
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l = [(1,2), (3,4), (5,6)]
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for i, j in l:
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print i, j
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print
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# zip function
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l1 = [1,2,3]
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l2 = [4,5,6]
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print zip(l1, l2)
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for i, j in zip(l1, l2):
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print i, j
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print
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# returns tuple
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k = ["Aleksey", "is", "my", "name"]
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for i in enumerate(k):
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print i
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# sorting example
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fruits = ["Apple", "Pears", "Oranges", "Peaches"]
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numbers = range(4)
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combined = zip(fruits, numbers)
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combined.sort()
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print combined
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# sorting by a key
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# need to create a function to pass to sort via key argument
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# the example is below
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def MySort(item):
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return item[1]
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fruits = ["Apple", "Pears", "Oranges", "Peaches"]
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numbers = range(4)
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combined = zip(fruits, numbers)
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combined.sort(key=MySort)
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print combined
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def print_me(nums):
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s = str(nums).strip("()")
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print "Print the first %d numbers: %s"%(len(nums),s)
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print_me((2,3,4,5))
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d = {}
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d["Aleksey"] = "Kramer"
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d["Jon"] = "Doe"
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d["Jane"] = "Doe"
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print d
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print d.__contains__("Aleksey")
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print d.keys()
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print d.values()
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d["My"] = "Name"
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print "%s, %s"%(d.keys(), d.values())
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print "Aleksey" in d
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print "Nona" in d
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print d.items()
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for i, j in d.items():
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print i, j
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d = {}
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d["name"] = "Chris"
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d["city"] = "Seattle"
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d["cake"] = "Chocolate"
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print d
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d.__delitem__("name")
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d.pop("city")
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print d
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d["fruit"] = "Mango"
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print d
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print "cake" in d
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print "fruit" in d
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if __name__ == "__main__":
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inClass()

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