python textbook with exercises

absolute value of the coefficients is required, and the increment or decrement function has been determined by the coefficient symbol.Since the coefficients have been determined, the following need to solve is the intercept problem (according to the geometrical meaning I understand the term), if according to the concept of geometrical intercept is very well understood, if x=0, y>=0, then the symbol of intercept is "+", and vice versa is "-", since the symbol is determined, Then the value can on

fromFunctoolsImportReducedefStr2Int (s):defChar2int (c):return{"0": 0,"1": 1,"2": 2,"3": 3,"4": 4, "5": 5,"6": 6,"7": 7,"8": 8,"9": 9}[c]returnReduceLambdaX, Y:x * 10 +y, Map (Char2int, s))Print(Str2Int ("98986553"))Title, change the string to int1.# using the map () function, the user entered an irregular English name, the first letter capitalized, the other lowercase canonical name.# input: [' Adam ', ' Lisa ', ' Bart '], output: [' Adam ', ' Lisa ', ' Bart ']:m = map (Lambda s:

)Sys.Setdefaultencoding(' Utf-8 ')X= Int(Raw_input("net profit:"))IfX100000:Bonus=X*0.1 PrintU"bonus:",Bonus,U"yuan"Elif 100001X200000:Bonus=10000+(X-100000)*0.075 PrintU"bonus:",Bonus,U"yuan"Elif 200001X400000:Bonus=10000+7500+(X-200000)*0.05 PrintU"bonus:",Bonus,U"yuan"Elif 400001X600000:Bonus=10000+7500+10000+(X-400000)*0.03 PrintU"bonus:",Bonus,U"yuan"Elif 600001X1000000:Bonus=10000+7500+10000+6000+(X-600000)*0.015 PrintU"bonus:",Bonus,U"yuan"elif 600001x1000000: Bonus=10000+7500+ 10000+6000

numbers, ranging from large to small. (b) is the same as a, but it is arranged in a dictionary order from large to small. " # (a) Defget_num (): globalnum_listnum_list= []num= ' whilenum!= '! ': num=raw_input (' Enter some numbers to '! "End"). Strip () ifnum!= '! ': try: num=float (num) except: print ' input is wrong, please re-enter ' get_num () else: num_list.append (num) else: breakreturnnum_listdefsort_descending (): get_num () printsorted (num_list,reverse=true) print '---------------

Deepen your understanding of Python character encoding with the following exercises#\x00-\xff 256 character (S )>>>A = range (256)>>>b = Bytes (a)#No parameter encoding>>>bB ' \x00\x01\x02 ... \xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff '>>>B.decode ('Utf-8')#Error Traceback (most recent): File "", line 1, in >>>B.decode ('Unicode-escape')#Normal' \x00\x01\x02 ... \xf6÷\xf8ùú\xfbü\xfd\xfe\xff '# out of the que

1 Exercises Describe the differences between compiled and interpreted languages, and list which languages you know are compiled and which are interpreted Compiled language: Fast execution, Debug trouble Interpreting language: Slow execution, easy commissioning What are the two ways to execute a Python script Enter the interpreter's interactive mode, but cannot permanently save th

false.Finally, find and or to determine whether it is true or false.After completing these steps, you can solve the problem.Let's take a look at the above 20th questions:3! = 4 and not ("testing "! = "Test" or "Python" = "Python ")Now we install the above steps and then write the results of each step:Search for = and! = Symbol, which becomes True and not (True or True) after judgment)True and false in brac

the parameter is Ganso:In [41]: random.choice((1,3,7,4))Out[41]: 1In [42]: random.choice((1,3,7,4))Out[42]: 7 Random.shuffle: If you want to shuffle an element in a sequence (excluding Ganso and strings), you can use this function method In [49]: list = [1,2,3,4]In [50]: random.shuffle(list)In [51]: listOut[51]: [4, 2, 1, 3] Random.sample (A, B): A fragment of the specified length B is intercepted randomly and independently from sequence a. In [58]: b = (9,9,9,1,2)In

Count : if count = = 8: pass Else : Print(count) = Count +12. Ask for 1-100 and.n = 1= 0 while n : = s + n Print (s) = n + 13, ask 1-100 all the oddn = 1 while n : = n%2 if temp = = 0: pass else: print(n) = n + 14. Ask for 1-100 all evenn = 1 while n : = n%2 if temp = = 0: Print (n) Else : Pass = n + 15, 1-2+3-4+5-6+7...99 all the numbers andn = 1= 0 while n := n 2 if temp = = 0: = s-

interactive interpreter? Try it and write the results.The interactive interpreter can calculate the result directlye) How can you improve the script so that it works as you think?6. Variable Assignment:1). assignment statement x, y, z = 1, 2, 3 What values will be assigned in X, Y, z respectively?2). What values do z, x, y = y, z, x, x, Y, z contain?7. The identifier. Which of the following are the valid Python identifiers? If not, please explain why

Python programming Quick Start-making tedious work automated-chapter two exercises and their answers 1, what are the two values of the Boolean data type? How do I spell it?A: True and false, use uppercase T and uppercase F, and the other letters are lowercase.What are the 2, 3 Boolean operators?Answer: And, or, and not.3. Write the truth table for each boolean operator (i.e., each possible combination of op

Exercises Vamei Source: http://www.cnblogs.com/vameihttp://www.cnblogs.com/vamei/archive/2012/07/19/2600135.html#undefined"Implement" #!/usr/bin/python#-*-coding:utf-8-*-#-------Calculate date difference ' Import datetimefrom datetime import dated1= Date (2008,1,1) d2=date (2008,10,1) t=abs (d2-d1) n=t.days+1print n#----Determine if 2008 is a leap year, Def leapyear (year): #判断year是否为闰年, ture for leap year

that the fetch starts at index 0 until index 3, but does not include index 3. That is, index 0,1,2, which is exactly 3 elements. #If the first index is 0, you can also omit:Print(L[:3])#[' Michael ', ' Sarah ', ' Tracy ']#slice backwards.Print(l[-2:])#2 to 0 does not include 0 (of course, it is not possible to include 0, the index of the first element of the countdown is-1, notice that 0 is not written, otherwise it will output [])Print(L[-2:-1])#2 to-1 does not include-1, that is, the second-l