Python while循环逻辑
当我在pythonshell上运行我的程序时。它对T，D，A，H，L运行良好，但当我在输入T，D，A，H，L之后输入E时，end1（）函数运行，totals（）函数也会立即运行。如果我重新启动程序，只输入E，程序运行正常Python while循环逻辑,python,while-loop,Python,While Loop,当我在pythonshell上运行我的程序时。它对T，D，A，H，L运行良好，但当我在输入T，D，A，H，L之后输入E时，end1（）函数运行，totals（）函数也会立即运行。如果我重新启动程序，只输入E，程序运行正常 dayArray = ["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"]; #This is the array for the days. consumedArray = [
dayArray = ["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"]; #This is the array for the days.
consumedArray = [2600,2400,3500,3200,2700,3300,3000]; #This is the array for the calories consumed.
burnedArray = [150,100,200,180,250,100,50]; #This is the array for the calories burned.
def main(): #This is the main module.
calories = 0 #This is the variable for the calories.
day = "" #This is the variable for the day.
letter = "" #This is the variable for the letter.
totals = 0 #This is the variable for the totals.
difference = 0 #This is the variable for the differences.
average = 0.0 #This is the variable for the average.
max1 = 0 #This is the variable for the max.
min1 = 0 #This is the variable for the min.
flag = False #This is the variable for the flag.
counter = 1 #This is the variable for the counter.
index = 1 #This is the variable for the index.
intro()
decisions()
def intro(): #This is the intro module.
print("Welcome to the program!! Enjoy!!") #This is the message to welcome you to the program.
print("*"*60) #Prints 60 stars.
def decisions(): #This is the decisions module.
print("What do you want to do? ") #This is asking you what you want to do.
print("T = Get Totals") #This is if you type in "T" you will get totals.
print("D = Find Differences") #This is if you type in "D" you will find differences.
print("A = Find Averages") #This is if you type in "A" you will find the averages.
print("H = Find Highest") #This is if you type in "H" you will find the highest.
print("L = Find Lowest") #This is if you type in "L" you will find the lowest.
print('*'*60); #Prints 60 stars.
letter = str(input("What do you want to do? ")) #This is asking you what you want to do.
print("You entered: ", letter) #This is telling you what letter you have entered.
flag=False;
while flag != True: #This is the loop for letter doesnt equals E
if letter == "T": #This is if letter is equal to T.
print("like anything")
totals()
print("like anything")
elif letter == "D": #This is if letter is equal to D.
differences()
elif letter == "A": #This is if letter is equal to A.
averages()
elif letter == "H": #This is if letter is equal to H.
max1()
elif letter == "L": #This is if letter is equal to L.
min1()
elif letter == "E":
break
else:
print("restart and try again") #Anything else end program
break
#when while loop ends end the program
end1()
def differences(): #This is the differences module.
print('*'*60); #Prints 60 stars.
print('Day Calories Consumed Calories Burned'); #This is the output for the column names.
print('*'*60); #Prints 60 stars.
for i in range(7): #This is saying i is in the range of 7.
x = consumedArray[i] - burnedArray[i]; #This is the formula for the differences.
print("{0:10s} {1:12d}" .format(dayArray[i],x)) #This is the output for the days and the differences.
print('*'*60); #Prints 60 stars.
print()
decisions() #run decisions to restart the main content of the program
def totals(): #This is the totals module.
print('*'*60); #Prints 60 stars.
print('Day Calories Consumed Calories Burned'); #This is the output for the column names.
print('*'*60); #Prints 60 stars.
for i in range(7): #This is saying i is in the range of 7.
print("{0:10s} {1:12d} {2:25d}" .format(dayArray[i], consumedArray[i], burnedArray[i])) #This is the output for the totals of days, consumed, and burned.
print('*'*60); #Prints 60 stars.
print()
decisions() #run decisions to restart the main content of the program
def averages(): #This is the averages module.
print('*'*60); #Prints 60 stars.
average1 = sum(consumedArray) / len(consumedArray); #This is the formula for the Average Calories Consumed.
average2 = sum(burnedArray) / len(burnedArray); #This is the formula for th Average Calories Burned.
print("Average Calories Consumed %.2f"% average1) #This is the output for the Average Calories Consumed at 2 decimal places as a float.
print("Average Calories Burned %.2f"% average2) #This is the output for the Average Calories Burned at 2 decimal places as a float.
print('*'*60); #Prints 60 stars.
print()
decisions() #run decisions to restart the main content of the program
def max1(): #This the max1 module.
print('*'*60); #Prints 60 stars.
maxconsumed = max(consumedArray); #This is finding the highest amount of calories consumed.
maxburned = max(burnedArray); #This is finding the highest amount of calories burned.
i = consumedArray.index(maxconsumed); #This is setting the highest amount of calories consumed in the index.
j = burnedArray.index(maxburned); #This is setting the highest amount of calories burned in the index.
print("Highest Calories Consumed {0:10s} {1:2d}" .format(dayArray[i],maxconsumed)) #This is the output for the highest calories consumed.
print("Highest Calories Burned {0:10s} {1:2d}" .format(dayArray[i],maxburned)) #This is the output for the highest calories burned.
print('*'*60); #Prints 60 stars.
print()
decisions() #run decisions to restart the main content of the program
def min1(): #This is the min1 module.
print('*'*60); #Prints 60 stars.
minconsumed = min(consumedArray); #This is finding the lowest amount of calories consumed.
minburned = min(burnedArray); #This is finding the lowest amount of calories burned.
i = consumedArray.index(minconsumed); #This is setting the lowest amount of calories consumed in the index.
j = burnedArray.index(minburned); #This is setting the lowest amount of calories burned in the index.
print("Lowest Calories Consumed {0:10s} {1:2d}" .format(dayArray[i],minconsumed)) #This is the output for the lowest calories consumed.
print("Lowest Calories Burned {0:10s} {1:2d}" .format(dayArray[i],minburned)) #This is the output for the lowest calories burned.
print('*'*60); #Prints 60 stars.
print();
decisions() #run decisions to restart the main content of the program
def end1(): #This is the end module.
print("You have finished the program!!"); #This is telling you that you have finished the program.
main() #This is telling the program to run all of the modules.
简而言之：您既有无限循环，也有不正确的递归 不正确的递归： 其他字母启动另一个
decisionsdecisions（）totals（）decisions（）决策while flag != True: # flag is never True, by the way
if letter == "T": # this is always True
... # this will be parsed over and over again since it does not break
decisions（）letter=str（input（…dayArray = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday",
"Sunday"] # This is the array for the days.
consumedArray = [2600, 2400, 3500, 3200, 2700, 3300,
3000] # This is the array for the calories consumed.
burnedArray = [150, 100, 200, 180, 250, 100,
50] # This is the array for the calories burned.
def main(): # This is the main module.
calories = 0 #This is the variable for the calories.
day = "" #This is the variable for the day.
letter = "" #This is the variable for the letter.
totals = 0 #This is the variable for the totals.
difference = 0 #This is the variable for the differences.
average = 0.0 #This is the variable for the average.
max1 = 0 #This is the variable for the max.
min1 = 0 #This is the variable for the min.
flag = False #This is the variable for the flag.
counter = 1 #This is the variable for the counter.
index = 1 #This is the variable for the index.
intro()
decisions()
def intro(): # This is the intro module.
print(
"Welcome to the program!! Enjoy!!") #This is the message to welcome you to the program.
print("*" * 60) #Prints 60 stars.
def decisions(): # This is the decisions module.
print("What do you want to do? ") #This is asking you what you want to do.
print("T = Get Totals") #This is if you type in "T" you will get totals.
print("D = Find Differences") #This is if you type in "D" you will find differences.
print("A = Find Averages") #This is if you type in "A" you will find the averages.
print("H = Find Highest") #This is if you type in "H" you will find the highest.
print("L = Find Lowest") #This is if you type in "L" you will find the lowest.
print('*' * 60) #Prints 60 stars.
flag = False
while flag != True: #This is the loop for letter doesnt equals E
letter = str(input("What do you want to do? ")) #This is asking you what you want to do.
print("You entered: ", letter) #This is telling you what letter you have entered.
if letter == "T": #This is if letter is equal to T.
print("like anything")
totals()
print("like anything")
elif letter == "D": #This is if letter is equal to D.
differences()
elif letter == "A": #This is if letter is equal to A.
averages()
elif letter == "H": #This is if letter is equal to H.
max1()
elif letter == "L": #This is if letter is equal to L.
min1()
elif letter == "E":
break
else:
print("restart and try again") #Anything else end program
break
#when while loop ends end the program
end1()
def differences(): # This is the differences module.
print('*' * 60) #Prints 60 stars.
print(
'Day Calories Consumed Calories Burned') #This is the output for the column names.
print('*' * 60) #Prints 60 stars.
for i in range(7): #This is saying i is in the range of 7.
x = consumedArray[i] - burnedArray[i] #This is the formula for the differences.
print("{0:10s} {1:12d}".format(dayArray[i],
x)) #This is the output for the days and the differences.
print('*' * 60) #Prints 60 stars.
print()
# decisions() #run decisions to restart the main content of the program
def totals(): # This is the totals module.
print('*' * 60) #Prints 60 stars.
print(
'Day Calories Consumed Calories Burned') #This is the output for the column names.
print('*' * 60) #Prints 60 stars.
for i in range(7): #This is saying i is in the range of 7.
print("{0:10s} {1:12d} {2:25d}".format(dayArray[i], consumedArray[i], burnedArray[
i])) #This is the output for the totals of days, consumed, and burned.
print('*' * 60) #Prints 60 stars.
print()
# decisions() #run decisions to restart the main content of the program
def averages(): # This is the averages module.
print('*' * 60) #Prints 60 stars.
average1 = sum(consumedArray) / len(
consumedArray) #This is the formula for the Average Calories Consumed.
average2 = sum(burnedArray) / len(
burnedArray) #This is the formula for th Average Calories Burned.
print(
"Average Calories Consumed %.2f" % average1) #This is the output for the Average Calories Consumed at 2 decimal places as a float.
print(
"Average Calories Burned %.2f" % average2) #This is the output for the Average Calories Burned at 2 decimal places as a float.
print('*' * 60) #Prints 60 stars.
print()
# decisions() #run decisions to restart the main content of the program
def max1(): # This the max1 module.
print('*' * 60) #Prints 60 stars.
maxconsumed = max(
consumedArray) #This is finding the highest amount of calories consumed.
maxburned = max(burnedArray) #This is finding the highest amount of calories burned.
i = consumedArray.index(
maxconsumed) #This is setting the highest amount of calories consumed in the index.
j = burnedArray.index(
maxburned) #This is setting the highest amount of calories burned in the index.
print("Highest Calories Consumed {0:10s} {1:2d}".format(dayArray[i],
maxconsumed)) #This is the output for the highest calories consumed.
print("Highest Calories Burned {0:10s} {1:2d}".format(dayArray[i],
maxburned)) #This is the output for the highest calories burned.
print('*' * 60) #Prints 60 stars.
print()
# decisions() #run decisions to restart the main content of the program
def min1(): # This is the min1 module.
print('*' * 60) #Prints 60 stars.
minconsumed = min(
consumedArray) #This is finding the lowest amount of calories consumed.
minburned = min(burnedArray) #This is finding the lowest amount of calories burned.
i = consumedArray.index(
minconsumed) #This is setting the lowest amount of calories consumed in the index.
j = burnedArray.index(
minburned) #This is setting the lowest amount of calories burned in the index.
print("Lowest Calories Consumed {0:10s} {1:2d}".format(dayArray[i],
minconsumed)) #This is the output for the lowest calories consumed.
print("Lowest Calories Burned {0:10s} {1:2d}".format(dayArray[i],
minburned)) #This is the output for the lowest calories burned.
print('*' * 60) #Prints 60 stars.
print()
# decisions() #run decisions to restart the main content of the program
def end1(): # This is the end module.
print(
"You have finished the program!!") #This is telling you that you have finished the program.
main() #This is telling the program to run all of the modules.
原因是所有函数都以再次运行函数决策结束。因此，从main开始，然后运行决策，然后选择选项T来运行函数总计。因为函数总计以decisions（）结束您现在有两个决策循环在运行。因此，当您按E键打破该循环时，您只会打破最近的决策循环，它会使您返回到前一个循环。摆脱所有这些决策（）在所有函数结束时，它将开始工作得更好。你不需要告诉程序返回到描述。当你完成在决策中调用的函数时，它将自动返回到循环中。作为旁注，更多的注释比更少的注释更好，但我同意前面的海报，这有点过头了评论很糟糕。旁注：这是一个荒谬的过度评论的案例。@StevenCumming你的教授在评论的情况下似乎有点强迫症。或者你误解了，有点过火了吗？@StevenCumming你的教授似乎不明白变量命名的意义。上次我因为评论太少而被打了半票，所以我被解雇了我是一个聪明的助手，变量
标志，而使用True