Python Learning-Textbook Program Practice (week more)

1. Draw a square helix

ImportTurtleturtle.setup (600,300,200,200) Turtle.pensize (1) Turtle.color ('Green') I=0 whilei<160: Turtle.seth (90) TURTLE.FD (i+1) Turtle.seth (180) TURTLE.FD (i+2) Turtle.seth (-90) TURTLE.FD (i+3) turtle.seth (0) turtle.fd (i+4) I=i+4Turtle.seth (90) TURTLE.FD (161) Turtle.seth (180) TURTLE.FD (162) Turtle.seth (-90) TURTLE.FD (163)

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2. Draw an angle-free square

ImportTurtledefdrawtriangle (angle): Turtle.seth (angle) Turtle.penup () turtle.fd (20) Turtle.down () turtle.fd (80) Turtle.penup () turtle.fd (20) Turtle.down () Turtle.setup (800,350) Turtle.pensize (1) Turtle.pencolor ("Black") forIinch(0,90,180): Drawtriangle (i) Turtle.seth (-90) Turtle.penup () turtle.fd (20) Turtle.down () turtle.fd (90H

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3. Work five days a week, rest 2 days, rest day level down 0.01, working days to what extent, a year after the level and every effort 1% achieved the same effect.

#the idea of function programming#DaydayupImportMathdefDayup (DF): Dayup=1.0 forIinchRange (365):        ifI%7inch[6, 0]: Dayup=dayup* (1-0.01)        Else: Dayup=dayup* (1 +DF)returnDayupdayfactor=0.01 while(Dayup (Dayfactor) <37.78): Dayfactor+=0.001Print("dayfactoris:{:.3f}.". Format (Dayfactor))

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4. Draw the progress bar

1. Multi-line accumulation does not refresh (time.sleep delay output)

#textprogress BarImport TimePrint("-----Execution Start-----") Scale=10 forIinchRange (scale+1): C= (I/scale) *100A, b="**"(In".."* (scale-i)Print("%{:^3.0f}[{}>-{}]". Format (c,a,b)) Time.sleep (0.1)Print("-----Execution Start-----")

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2. Single-row refresh print function add parameter end= ' do not wrap the head with escape character ' \ R ' to move the output pointer to the beginning of the line note: The Idle mask line refresh function needs to run. PY Program

#textprogress BarImport TimePrint("-----Execution Start-----") Scale=10 forIinchRange (scale+1): C= (I/scale) *100A, b="**"(In".."* (scale-i)Print("\r%{:^3.0f}[{}>-{}]". Format (c,a,b), end="') Time.sleep (0.1)Print("-----End of execution-----")                            

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3. Above based on increased running time monitoring Time.clock () function First call timing start, second and subsequent calls return with time difference from first time

#textprogress BarImport TimePrint("-----Execution Start-----") Scale=10T=Time.clock () forIinchRange (scale+1): C= (I/scale) *100T-=Time.clock () A, B="**"*i,".."* (scale-i)Print("\r%{:^3.0f}[{}>-{}]{:.2f}s". Format (c,a,b,-t), end="') Time.sleep (1)Print("-----End of execution-----")

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Python Learning-Textbook Program Practice (week more)