Введение в программирование на Python - ответы

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myKeys=myDict.keys() 

 import sqlite3conn = sqlite3.connect('music.db')cur = conn.cursor()cur.execute('DROP TABLE IF EXISTS Tracks ')cur.execute('CREATE TABLE Tracks (title TEXT, plays INTEGER)')conn.close() 

>>>x=0 >>>for item in myList:        x=x+1

  mylist =[2] hisList=[3,4,5] ourlist= myList*4 + hisList print ourList  

 def hist(myString):    d = dict()    for c in s:    if c not in d:    d[c] = 1    else:    d[c] = d[c] + 1    return d  

  >>>song="Eleanor Reagby" >>>song.find('Re') 

 import urlibimg = urllib.urlopen('http://www.py4inf.com/cover.jpg').read()fhand = open('cover.jpg', 'w')fhand.write(img)fhand.close() 

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

 myDict = {0:'zero',1:'one',2:'two',3:'three'}myList=list() for key, val in myDict.items()     myList.append(val,key)x = myList[2] 

 fhand = urllib.urlopen('http://www.py4inf.com/code/romeo.txt')for line in fhand:    print line.strip() 

 conn = sqlite3.connect('twdata.db')cur = conn.cursor()cur.execute('''CREATE TABLE IF NOT EXISTS Twitter (name TEXT, retrieved INTEGER, friends INTEGER)''')

  >>>myString="Python is great!" >>>print myString[0:3]  

  myDict = {0:'zero',1:'one'} myValues=myDict.values() 

 def hist(myString):    d = dict()    for c in s:      if c not in d         d[c] = 1      else        d[c] = d[c] + 1    return d  

  >>>song="    Hello Python! You are welcome!" >>>a=song.strip() >>>b=a.find('!') >>>a[b+1:b+4]  

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

  myFile=open('mbox.txt') for x in myFile:     print x 

  >>>x=10 >>>while x >= 0           x=x-1		  print x 

  >>>myString="Wellcome to our course!" >>>counter=0 >>>for symbol in myString:     if symbol =='r'	      counter=counter+1>>>print counter 

  >>>myString="Wellcome" >>> 'a' in myString 

  >>>myWord > "six" True 

  >>>song="Let it be" >>>song.find('it') 

  >>>song="    Hello Python! You are welcome!" >>>a=song.strip() >>>b=a.find('!') >>>a[b+1:b+3]  

  myFile=open('mbox.txt') x=myFile.read() 

  myFile=open('mbox-short.txt') fileToString=myFile.read() print fileToString[71:81]  

 myFile=open('mbox-short.txt')for line in myFile:line = line.rstrip()if  line.startswith('Author:'):    print(line) 

  myList = ['one','two','three','four','five'] print myList[-1] 

  myList = ['one','two','three','four','five'] print 'One' in myList 

  myList =[1,2,3] hisList=[3,4,5] ourList= myList + hisList print ourList  

  mylist =[1] hisList=[3,4,5] ourlist= myList*3 + hisList print ourList  

  myList = ['one','two'] extraList = ['six',] newList = myList + extraList newList.sort()  print newList 

   myDict = {0:'zero',1:'one'}  print myDict[0] 

   myDict = {0:'zero',1:'one'}  print 1 in myDict 

  myDict = {0:'zero',1:'one',2:'two'} print len(myDict) 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myKeys=myDict.keys() 

 try:fhand = open('http://shakespeare.mit.edu/Tragedy/romeoandjuliet/romeo_juliet.2.2.html') 

  myTuple=(0,1,2,3,4) myTuple[2]=7 print myTuple 

  myTuple=(0,1,2,3,4) myTuple = (7,) + myTuple[2:] print myTuple 

 words=['one','two','three']def sort_by_length(words):    t = list()    for word in words:        t.append((len(word), word)) 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myList=list() for key, val in myDict.items()     myList.append(val,key)print myList[1] 

 myDict = {0:'zero',1:'one',2:'two',3:'three'}myList=list() for key, val in myDict.items()     myList.append(val,key)x = myList[0] 

  myPlaces=dict() myPlaces[18,28]='Place1' myPlaces[11,18]='Place2' 

 import socketmysock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)mysock.connect(('www.py4inf.com', 80))mysock.send('GET http://www.py4inf.com/code/romeo.txt HTTP/1.0\n\n')while True:    data = mysock.recv(512)    if ( len(data) == 0 ) :         breakprint datamysock.close()  

 import urlibimg = urllib.urlopen('http://www.py4inf.com/cover.jpg').read()fhand = open('cover.jpg', 'w')fhand.write(img)fhand.close() 

 import urllibimg = urllib.urlopen('http://www.py4inf.com/cover.jpg')fhand = open('cover.jpg', 'w')size = 0while True:   info = img.read(100000)   if len(info) ==0:       break   size = size + len(info)   fhand.write(info)print size,'characters copied.'fhand.close() 

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

stuff = ET.fromstring(input)lst = stuff.findall('users/user')

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

<stuff><users>  <user x="2">   <id>001</id>   <name>Chuck</name> </user>   <user x="7">    <id>009</id>    <name>Bruce</name>  </user> </users></stuff>

 import sqlite3conn = sqlite3.connect('music.db')cur = conn.cursor()cur.execute('DROP TABLE IF EXISTS Tracks ')cur.execute('CREATE TABLE Tracks (title TEXT, plays INTEGER)')conn.close() 

 conn = sqlite3.connect('twdata.db')cur = conn.cursor()cur.execute('''CREATE TABLE IF NOT EXISTS Twitter (name TEXT, retrieved INTEGER, friends INTEGER)''')

  myList =[1,2,3] hisList=[3,4,5] ourList= myList + hisList print ourList  

  myTuple=(0,1,2,3,4,5) myTuple = (7,) + myTuple[4:] print myTuple 

 try:fhand = open('http://shakespeare.mit.edu/Tragedy/romeoandjuliet/romeo_juliet.2.2.html') 

  >>>myString="Wellcome to our course!" >>>counter=0 >>>for symbol in myString:     if symbol =='o'	      counter=counter+1>>>print counter 

  myDict = {0:'zero',1:'one',2:'two',3:'three',4:'four'} print len(myDict) 

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

 conn = sqlite3.connect('twdata.db')cur = conn.cursor()cur.execute('''CREATE TABLE IF NOT EXISTS Twitter (name TEXT, retrieved INTEGER, friends INTEGER)''')

 myDict = {0:'zero',1:'one',2:'two',3:'three'}myList=list() for key, val in myDict.items()     myList.append(val,key)x = myList[1] 

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

 def hist(myString):    d = dict()    for c in s:      if c not in d:         d[c] = 1      else:        d[c] = d[c] + 1    return d  

  >>>myString="Hello!" >>>print myString[0:4]  

  >>>myString="Wellcome to our course!" >>>counter=0 >>>for symbol in myString:     if symbol =='e'	      counter=counter+1>>>print counter 

  >>>myString="Wellcome" >>> 'w' in myString 

  >>>song="Yellow submarine" >>>song.find('sub') 

  myFile=open('mbox.txt') x=myFile.read() 

  myFile=open('mbox.txt') for x in myFile:     print x 

  myFile=open('mbox-short.txt') fileToString=myFile.read() print fileToString[94:101]  

 myFile=open('mbox-short.txt')for line in myFile:line = line.rstrip()if  line.startswith('Author:'):    print(line) 

  myList = ['one','two','three','four','five'] print myList[1] 

  myList = ['one','two','three','four','five'] print 'one' in myList 

  mylist =[1] hisList=[3,4,5] ourlist= myList*2 + hisList print ourList  

  myList = ['one','two'] extraItem = 'six' myList.append(extraItem) myList.sort() print myList 

   myDict = {0:'zero',1:'one'}  print myDict[0] 

  myDict = {0:'zero',1:'one'} myValues=myDict.values() 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} print len(myDict) 

 try:fhand = open('http://shakespeare.mit.edu/Tragedy/romeoandjuliet/romeo_juliet.2.2.html') 

  myTuple=(0,1,2,3,4) myTuple[1]=9 print myTuple 

 words=['one','two','three']def sort_by_length(words):    t = list()    for word in words:        t.append((len(word), word)) 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myList=list() for key, val in myDict.items()     myList.append(val,key)print myList[1] 

  myPlaces=dict() myPlaces[18,28]='Place1' myPlaces[11,18]='Place2' 

 import socketmysock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)mysock.connect(('www.py4inf.com', 80))mysock.send('GET http://www.py4inf.com/code/romeo.txt HTTP/1.0\n\n')while True:    data = mysock.recv(512)    if ( len(data) == 0 ) :         breakprint datamysock.close()  

 fhand = urllib.urlopen('http://www.py4inf.com/code/romeo.txt')for line in fhand:    print line.strip() 

 import urlibimg = urllib.urlopen('http://www.py4inf.com/cover.jpg').read()fhand = open('cover.jpg', 'w')fhand.write(img)fhand.close() 

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

stuff = ET.fromstring(input)lst = stuff.findall('users/user')

<stuff><users>  <user x="2">   <id>001</id>   <name>Chuck</name> </user>   <user x="7">    <id>009</id>    <name>Bruce</name>  </user> </users></stuff>

 import sqlite3conn = sqlite3.connect('music.db')cur = conn.cursor()cur.execute('DROP TABLE IF EXISTS Tracks ')cur.execute('CREATE TABLE Tracks (title TEXT, plays INTEGER)')conn.close() 

   myDict = {0:'zero',1:'one'}  print myDict[0] 

 fhand = urllib.urlopen('http://www.py4inf.com/code/romeo.txt')for line in fhand:    print line.strip() 

  myList = ['one','two','three','four','five'] print myList[0] 

  >>>myString="Wellcome" >>> 'E' in myString 

  >>>myWord > "twelve" True 

  myFile=open('mbox.txt') for x in myFile:     print x 

  myFile=open('mbox-short.txt') fileToString=myFile.read() print fileToString[55:63] 

 myFile=open('mbox-short.txt')for line in myFile:line = line.rstrip()if  line.startswith('Author:'):    print(line) 

  myList = ['one','two'] extraList = ['six','seven'] newList = myList + extraList  print newList 

 import urllibimg = urllib.urlopen('http://www.py4inf.com/cover.jpg')fhand = open('cover.jpg', 'w')size = 0while True:   info = img.read(50000)   if len(info) ==0  : break      size = size + len(info)     fhand.write(info)print size,'characters copied.'fhand.close() 

  >>>myWord > "Choice" False 

 import urllibimg = urllib.urlopen('http://www.py4inf.com/cover.jpg')fhand = open('cover.jpg', 'w')size = 0while True:   info = img.read(10000)   if len(info) ==0:       break   size = size + len(info)   fhand.write(info)print size,'characters copied.'fhand.close() 

  >>>myString="Wellcome" >>>print myString[0:4]  

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myKeys=myDict.keys() 

  myTuple=(0,1,2,3,4) myTuple = (7,) + myTuple[3:] print myTuple 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myList=list() for key, val in myDict.items()     myList.append(val,key)print myList[1] 

  myPlaces=dict() myPlaces[18,28]='Place1' myPlaces[11,18]='Place2' 

 conn = sqlite3.connect('twdata.db')cur = conn.cursor()cur.execute('''CREATE TABLE IF NOT EXISTS Twitter (name TEXT, retrieved INTEGER, friends INTEGER)''')

   myDict = {0:'zero',1:'one'}  print 2 in myDict 

 myList =[1,2,3] hisList=[3,4,5] ourList= myList + hisList print ourList  

   myDict = {0:'zero',1:'one'}  print 0 in myDict 

  myTuple=(0,1,2,3,4) myTuple[3]=6 print myTuple 

 <person><name>    <firstname> Chuck </firstname>     <lastname> Noris </lastname></name>< phone type="intl"> +1 734 303 4456 </phone><email hide="yes"/></person>

  myFile=open('mbox.txt') x=myFile.read() 

  myList = ['one','two','three','four','five'] print 'first' in myList 

  myDict = {0:'zero',1:'one'} myValues=myDict.values() 

 words=['one','two','three']def sort_by_length(words):    t = list()    for word in words:        t.append((len(word), word)) 

 import socketmysock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)mysock.connect(('www.py4inf.com', 80))mysock.send('GET http://www.py4inf.com/code/romeo.txt HTTP/1.0\n\n')while True:    data = mysock.recv(512)    if ( len(data) == 0 ) :         breakprint datamysock.close()  

 song="    Hello Python! You are welcome!"a=song.strip()b=a.find('!')print a[b+1:b+4]  

stuff = ET.fromstring(input)lst = stuff.findall('users/user')

<stuff><users>  <user x="2">   <id>001</id>   <name>Chuck</name> </user>   <user x="7">    <id>009</id>    <name>Bruce</name>  </user> </users></stuff>

 conn = sqlite3.connect('twdata.db')cur = conn.cursor()cur.execute('''CREATE TABLE IF NOT EXISTS Twitter (name TEXT, retrieved INTEGER, friends INTEGER)''')

 conn = sqlite3.connect('twdata.db')cur = conn.cursor()cur.execute('''CREATE TABLE IF NOT EXISTS Twitter (name TEXT, retrieved INTEGER, friends INTEGER)''')