def test_hash_table_generic():
hashtable = Hashtable(1024)
# testing for single input
hashtable.add('ahmad', 25)
hashtable.add('silent', True)
assert hashtable.contains('ahmad') is True
assert hashtable.contains('ahmadd') is False
# testing for multiple inputs for a single bucket
hashtable.add('hamad', 29)
hashtable.add('listen', 'Hey man')
assert hashtable.contains('ahmad') is True
assert hashtable.contains('hamad') is True
assert hashtable.contains('listen') is True
assert hashtable.contains('silent') is True
# check for duplicate input
assert hashtable.add('ahmad', 35) == 'key already exists'
# testing the values
assert hashtable.get('ahmad') == 25
assert hashtable.get('hamad') == 29
assert hashtable.get('dada') == None
def printSummary(theTable):
"""
printSummary prints a summary of information about the hash table contents.
printSummary : HashTable -> NoneType
"""
# Display the entire table!
print("Unique words:", theTable.size)
# Find the most common word in the text file.
total = 0
maxWord = ""
maxCount = 0
for key in keys(theTable):
thisCount = get(theTable, key)
total += thisCount
if thisCount > maxCount:
maxCount = thisCount
maxWord = key
print("There are " + str(len(keys(theTable))) + " words.")
print("Total words:", total)
print('"' + maxWord + "\" appeared ", str(maxCount),
" times, more than any other word.")
print('Imbalance =', imbalance(theTable))
print('Load =', load(theTable))
print('Size =', len(theTable.table))
def printTable( hTable ):
"""
Print the contents of the given hash table.
Each key/value pair is displayed in parentheses, tuple-style.
All pairs appear on a single line.
printTable : HashTable -> NoneType
"""
print( "Word Count Data ---------------" )
lcount = 0
ltext = 0
for key in keys( hTable ):
# print( "(" + key + "," + str( get( hTable, key ) ) + ")", end=" " )
txt = "(" + key + "," + str( get( hTable, key ) ) + ")"
ltext += len( txt )
if ltext > 51:
print( txt )
ltext = 0
else:
print( txt, end=" " )
print()
def printTable(hTable):
"""
Print the contents of the given hash table.
Each key/value pair is displayed in parentheses, tuple-style.
All pairs appear on a single line.
printTable : HashTable -> NoneType
"""
print("Word Count Data ---------------")
lcount = 0
ltext = 0
for key in keys(hTable):
# print( "(" + key + "," + str( get( hTable, key ) ) + ")", end=" " )
txt = "(" + key + "," + str(get(hTable, key)) + ")"
ltext += len(txt)
if ltext > 51:
print(txt)
ltext = 0
else:
print(txt, end=" ")
print()
def main():
#capacity = int( input( "Enter capacity (-1 for default): " ) )
capacity = 10
if capacity < 0:
hTable = HashTable()
else:
hTable = HashTable(capacity)
#filename = input( "Enter filename: " )
filename = 'atotc.txt'
wordTable = word_count(hTable, filename)
printSummary(wordTable)
while True:
print("Commands: k[ey] <word> f[ind] <word> q[uit] ? ", end=" ")
response = input(":- ") # the displayed prompt
query = response.split()
if len(response) == 0 or not response[0] in "fkq":
print(response + " invalid. Please enter a command and a word.")
response = ""
continue
if query[0] == "k":
print( "( " + query[1] + " in text ) is " \
+ str( contains( wordTable, query[1] ) ) + "." )
if query[0] == "f":
if contains(wordTable, query[1]):
print( query[1] + " appears " \
+ str( get( wordTable, query[1] ) ) + " times." )
else:
print(query[1] + " in not in the text.")
if query[0] == "q":
break
#
answer = input("Do you want to see the entire table?(y/n) ")
if answer != "y":
return
printTable(wordTable)
def word_count( hTable, filename ):
"""
Record the frequency of all words in the named file in the hashtable.
word_count : HashTable String -> HashTable
"""
# Read the words of the text file into the word count table.
fd = open( filename )
for line in fd:
for word in line.split():
# using a regular expression argument to strip(),
# strip out punctuation and convert token to lower-case.
word = word.strip(",.\"\';:-!?").lower()
if contains( hTable, word ):
count = get( hTable, word )
put( hTable, word, count + 1 )
else:
put( hTable, word, 1 )
fd.close() # closing the file is a 'good practice'.
return hTable
def word_count(hTable, filename):
"""
Record the frequency of all words in the named file in the hashtable.
word_count : HashTable String -> HashTable
"""
# Read the words of the text file into the word count table.
fd = open(filename)
for line in fd:
for word in line.split():
# using a regular expression argument to strip(),
# strip out punctuation and convert token to lower-case.
word = word.strip(",.\"\';:-!?").lower()
if contains(hTable, word):
count = get(hTable, word)
put(hTable, word, count + 1)
else:
put(hTable, word, 1)
fd.close() # closing the file is a 'good practice'.
return hTable
def main():
capacity = int( input( "Enter capacity (-1 for default): " ) )
if capacity < 0:
hTable = HashTable()
else:
hTable = HashTable( capacity )
filename = input( "Enter filename: " )
wordTable = word_count( hTable, filename )
printSummary( wordTable )
print( "Average chain length: " + str( imbalance( wordTable ) ) )
while True:
print( "Commands: k[ey] <word> f[ind] <word> q[uit] ? ", end=" " )
response = input( ":- " ) # the displayed prompt
query = response.split()
if len( response ) == 0 or not response[0] in "fkq":
print( response + " invalid. Please enter a command and a word." )
response = ""
continue
if query[0] == "k":
print( "( " + query[1] + " in text ) is " \
+ str( contains( wordTable, query[1] ) ) + "." )
if query[0] == "f":
if contains( wordTable, query[1] ):
print( query[1] + " appears " \
+ str( get( wordTable, query[1] ) ) + " times." )
else:
print( query[1] + " in not in the text." )
if query[0] == "q":
break
#
answer = input( "Do you want to see the entire table?(y/n) " )
if answer != "y":
return
printTable( wordTable )
def printSummary( theTable ):
"""
printSummary prints a summary of information about the hash table contents.
printSummary : HashTable -> NoneType
"""
# Display the entire table!
print( "Unique words:", theTable.size )
# Find the most common word in the text file.
total = 0
maxWord = ""
maxCount = 0
for key in keys( theTable ):
thisCount = get( theTable, key )
total += thisCount
if thisCount > maxCount:
maxCount = thisCount
maxWord = key
print( "There are " + str( len( keys( theTable ) ) ) + " words." )
print( "Total words:", total )
print( '"' + maxWord + "\" appeared ", str( maxCount ),
" times, more than any other word." )
size = int(input('Enter the # of elements to hold in hashtable: '))
hashtable = hashtable.HashTable(size)
print_help()
print('')
while action is not QUIT.key:
action = input('Enter a command: ')
try:
if action is SET.key:
key = input('key: ')
value = input('value: ')
hashtable.set(key, value)
elif action is GET.key:
key = input('key: ')
retrieved = hashtable.get(key)
if retrieved is None:
print('Did not find key with value ' + key)
else:
print('Retrieved value: ' + retrieved)
elif action is DELETE.key:
key = input('key: ')
deleted = hashtable.delete(key)
if deleted is None:
print('Did not find key with value ' + key)
else:
print('Deleted value: ' + deleted)
elif action is LOAD.key:
print(hashtable.load())
elif action is PRINT.key:
hashtable.printBins()
import psutil
from hashtable import make, assign, iterate, get
import random
p = psutil.Process()
st = p.memory_info().rss
D = make()
for i in range(100):
k = random.randint(1, 1000000)
v = i
assign(D, k, v)
k0, v0 = next(iter(iterate(D)))
print(get(D, k0))
print("{} -> {}".format(st, p.memory_info().rss))
