爲什麼我一直在Python中獲取任意語法錯誤？

Question

我正在Python中編寫一個簡單的腳本來返回GDP值。從第6行開始，它給出了一個「語法錯誤」，沒有進一步的闡述。我評論了這個問題（第6行）和第16行的所有行，我得到了「解析EOF」錯誤。我真的不確定要做什麼，因爲我檢查了不匹配的分隔符，不正確的語法等，但我能找到的唯一方法就是執行我的打印語句的方式，但由於它們都是相同的，只有一個解析錯誤不太可能是這種情況。下面是代碼：

y_i = int(input("What year did your alt history begin?")) 
y_f = 2014 
p_i = int(input("Enter population of your territory starting from your alt history.") 
p_g = int(input("Enter average population growth from year to year in a numerical value. No percentages.") 
p_f = (p_i(p_g - y_f) ** 2)/(10000 * y_i ** 2) 

print("This is your nation's population.", p_f, "If you got an error, check that you put in all inputs correctly.") 

gdp_capita = int(input("What is your GDP per capita? Please use the number only, in your own currency.") 


gdp = pop * gdp_capita 

print("This is your nation's GDP.", gdp, "If you get an error, please check that you entered everything in correctly.") 

Answer 1

你的錯誤在你syntaxing。你錯過了小括號。在第3,4和9行，你有這個：int(input("...")，沒有最後一個括號！你也試圖在第5行調用一個整數，p_f = p_i(p_g...)。我以爲你試圖繁殖，所以我在那裏放了一個乘號（星號）。此外，請確保您現在雙星號意味着'對'的力量。 2**3 = 8，而不是6。

你的代碼改成這樣：

y_i = int(input("What year did your alt history begin?")) 
y_f = 2014 
p_i = int(input("Enter population of your territory starting from your alt history.")) 
p_g = int(input("Enter average population growth from year to year in a numerical value. No percentages.")) 
p_f = (p_i*(p_g - y_f) ** 2)/(10000 * y_i ** 2) 

print("This is your nation's population.", p_f, "If you got an error, check that you put in all inputs correctly.") 

gdp_capita = int(input("What is your GDP per capita? Please use the number only, in your own currency.")) 


gdp = pop * gdp_capita 

print("This is your nation's GDP.", gdp, "If you get an error, please check that you entered everything in correctly.") 

但是，你這樣做是正確的行1 :)