coursera full stack web development review

guaranteed unique immutable, can hold multiple values, can be modified, can not be unique, no, can be quickly found. The reason for a quick look is to hash the key into a string of numbers, indexed by the dichotomy, and so on.View: dic[' key ', this type of view if it does not exist, will be an error. Dic.get (' key '), this way to see if it does not exist will show none.Add/Modify: dic[' key ' = ' value 'Determine if it exists: ' Key ' in dicNesting of dictionaries:See all Value/key:info.value

Time.time () timestampShow timestamps, that's how many seconds from 1970 to now.4.1.2 Time.localtime () structured time　　　　Import Time Print (Time.localtime ())--time.struct_time (tm_year=2018, tm_mon=6, tm_mday=25, tm_hour=22, Tm_min=9, TM _sec=30, Tm_wday=0, tm_yday=176, tm_isdst=0)4.1.3 String Time4.2 Conversion between different time structures4.2.1 Timestamp conversion to structure time　　　　A=Time.localtime (Time.time ())print(a)------time.struct_time (tm_year= 2018, Tm_mon=6, tm_mday=25,

#上课的时候咩有听太懂, Blur and learn one sideOriginal fileGlobalLog127.0.0.1local2 Daemon Maxconn256Log127.0.0.1local2 infodefaults LogGlobalmode HTTP Timeout connect 5000ms timeout client 50000ms timeout server 50000ms opt Ion Dontlognulllisten Stats:8888stats enable stats URI/Admin Stats Auth admin:1234frontend oldboy.org Bind0.0.0.0:80option httplog option httpclose option forwardfor logGlobalACL www hdr_reg (host)-i www.oldboy.org use_backend www.oldboy.orgifwwwbackend www.oldboy1.org Server101.1000.

23. Tax department collects income tax. The provisions are as follows:(1) The income is below 2000. Exempt from.(2) income in 2000-4000, more than 2000 parts of the levy of 3% tax.(3) income in 4000-6000, more than 4,000 parts of the levy of 4% tax.(4) income in 6000-10000, more than 6,000 parts of the levy of 8% tax.(5) More than 10000 of the income, more than the partial levy of 20% tax.Note: If a person's income is 8000, then he will pay 2000 to 4000 tax plus 4000 to 6000 tax plus 6000 to 800

17. Read the numbers: Give a dictionary that identifies the pronunciation of each number in the dictionary, including the relevant symbols, and then the user enters a number that allows the program to read the corresponding pronunciation (no voice output is required). Simple printing.Dics = { '-':'Fu', '0':'Ling', '1':'Yi', '2':'er', '3':'San', '4':'si', '5':'Wu', '6':'Liu', '7':'Qi', '8':'BA', '9':'JIU', '.':'Dian'}s="'content= Input ('Please enter the charac

12. Output Product list, user input serial number, display user selected item (upgrade question)Product List:Goods = [{"Name": "Computer", "Price": 1999},{"Name": "Mouse", "Price": 10},{"Name": "Yacht", "Price": 20},{"Name": "Beauty", "Price": 998},]Requirements:1: Page display serial number + product name + commodity price, such as:1 PC 19992 Mouse 10...2: The user enters the selected product serial number, then prints the product name and the commodity price3: If the user entered an incorrect

21. Give a list of pure numbers. Please sort the list (upgrade question).Ideas:(1) Complete the data exchange between A and B. For example, a = ten, B = 24 after exchange, A = 10, B =(2) Loop list. Determine the size relationship between A[i] and a[i+1], if a[i] is larger than a[i+1. Then swap. At the end of the cycle. The largest data in the current list is moved to the far right.(3) Think about it if you perform the above operation again. Finally, the second-largest data is moved to the right.

14. Good sound Draft contest the judges are allowed to enter when scoring. Suppose, there are 10 judges. Let the 10 judges score, request, scores must be greater than 5 points, less than 10 points.Count = 1 whileCount : Fen= Int (Input ('Please rate the first {} judges:'. Format (count)) ifFen orFen >= 10:#Note that this is the or, not the and Print('Are you stupid?') Continue Else: Print('the first {} judges scored {}'. Format (count, Fen)) Count+ = 1Python3.6

15. Movie Voting: The program gives a list of several films that are currently being released. Voted by the user for each movie.Finally, the user's voting information is published in LST = [' Beijing meets Seattle ', ' Save Mr. Wu ', ' American past ', ' the beautiful legend of Sicily ']Result: {' Beijing meets Seattle ': 99, ' Save Mr. Wu ': 80, ' The American Past ': 6, ' The Beautiful Tales of Sicily ': 23}LST = ['Beijing meets Seattle','Save Mr. Wu','The American past','the beautiful legends

8. The following variables (TU is a meta-ancestor), please implement the required functions: Tu = ("Alex", [one, three, {"K1": ' V1 ', "K2": ["Age", "name"], "K3": (11,22,33)}, 44])A. Features that tell Ganso # The ancestor is a read-only listB. Can you tell me if the first element in the TU variable, "Alex", could be modified? #不能被修改C. What is the value of "K2" in the TU variable? Is it possible to be modified? If you can, add an element, "Seven", to theThe value for "K2" is a list and the appe

) = Age (1) + 2age (1) = 40We write a recursive function, which is:def Age (N): if n = =1 :return , else: return age (n-1 ) +2Print(age (4))Analyze this recursive function in stepsdefAge (1): if1 = = 4: return40elif1 >0 and1 : returnAge (+ 2)defAge (2): if2 = = 4: return40elif2 >0 and2 : returnAge (2+1) + 2defAge (3): if3 = = 4: return40elif3 >0 and3 : returnAge (3+1) + 2defAge (4): if4 = = 4: return40elif3 >0 and3

① in terms of parameters:Map () Function:Map () contains two parameters, the first one is a function, the second is a sequence (list or tuple). Where a function (that is, a function of the first parameter position of a map) can receive one or more parameters.Reduce () function:The first parameter of reduce () is a function, and the second is a sequence (list or tuple). However, its function must receive two parameters.② from the numerical effect on the transfer in terms of:Map () is the function

There are many kinds of computing that can be done by computers, not just subtraction, it can do many operations like our human brain.Categories: arithmetic operations, comparison operations, logical operations, assignment operations, member operations, identity operations, bitwise operations, today we understand the top four first.Arithmetic operations:A=10,b=20Assignment operation:Comparison operation:Logical operation:Python full

(name.rjust(30,‘*‘))# print(name.zfill(50)) #用0填充#captalize,swapcase,title# name=‘eGon‘# print(name.capitalize()) #首字母大写,其余部分小写# print(name.swapcase()) #大小写翻转# msg=‘egon say hi‘# print(msg.title()) #每个单词的首字母大写#在python3中num0=‘4‘num1=b‘4‘#bytesnum2=u‘4‘#unicode,python3中无需加u就是unicodenum3=‘四‘#中文数字num4=‘Ⅳ‘#罗马数字#isdigt:str,bytes,unicode# print(num0.isdigit())# print(num1.isdigit())# print(num2.isdigit())# print(num3.isdigit())# print(num4.isdigit())#isdecimal:str,unicode# num0=‘4‘# num1=b‘4‘ #bytes# n

001000000000000111110010 Python3 no need to pay attention to Python2 each file appears in Chinese, the head must be input () input ("Please enter user name:") input ("Enter password:") waits for user input until the user enters. The variable name can only be made up of: letter number underscore special case: variable names cannot start with a number. You cannot use Python's keywords as varia

outside the function are global variables, such as $x and $y.Then to use them inside the function, you must use the Global keyword to declare that these two things are global variables before they can be used, otherwise the use of the OH.This must be remembered, because it is very useful, because we often need to use global variables when writing programs with functions.Let's take another look at the code: function myTest () { static$x=0; Echo $x ; $x+ +See here we see there is a

form to define the types of inputs.Then when the user clicks the Submit button, the form submits all the contents of the form to another page.So how do you know which page to submit the form to, and note that the page is written in the form's properties.name= "Input" action= "html_form_action.php" method = "Get" >That's it, action this property is written by the user click on the Submit button, the form of the data submitted to the page, this PHP file will usually be sent over the form of dat

background-size set above.The value of this property is as follows, one is the common CSS unit, percent% or pixel px can be.This background-size property of the CSS tutorial we do not see the first page, we have to go to the CSS reference manual to see the CSS properties, there is a list of CSS properties, for our reference.Of course background In addition to these commonly used properties, there are a few other less commonly used properties, can be found in the CSS property list.Today, our CSS

= None) "" "Replace" "" s = "Alex SB Alex" ret = S.replace ("Al", "BB") ("Al", "BB", from left to right first) p Rint (ret) # # #打印bbex SB Bbex Rstip (self,chars = None) "" "Split" "" s = "Alexalex" ret = S.split ("E") ("E", 1) print (ret) # # #打 Indian [' Al ', ' xal ' x '] Swapcase (self) "" "uppercase lowercase, lowercase to uppercase" "" s = Qiao print (S.swapcase ()) # # #打印qIAO Title (self) "" "Conversion title" " s =" The school "

For Weber, more familiar than JS, how to apply it to all aspects, has been my consideration of a place. How to become an all-stack practitioner is a question that needs to be pondered continuously. Thanks to GitHub, let a lot of developers have a shared knowledge of the platform, thanks to angular, so that JS development web front-end spa to become easy, thanks t