if / else語句出現問題

Question

我對編碼還很陌生，遇到了一個我找不到或無法找到答案的問題。

基本上，每次用戶在raw_input中輸入yes時，它都會吐出'if'字符串，但並不排除'else'字符串。

我假設它是因為延遲造成干擾，而我沒有正確設置它，因為在代碼中（如果，For，Else），可能是因為For阻礙了代碼，我不知道。 希望能有所幫助！ :)

import sys
import time
string = 'Hello comrade, Welcome!\n'
for char in string:
    sys.stdout.write(char)
    sys.stdout.flush()
    time.sleep(.03)
time.sleep(1)
x=raw_input('Are you ready to enter the fascinating Mists of Verocia? ')
if x == 'yes':
   string = "Verocia was a mystical land located just south of Aborne"
for char in string:
    sys.stdout.write(char)
    sys.stdout.flush()
    time.sleep(.03)
else:
    print ('Please restart program whenever you are ready!')

Answer 1

請注意縮進。 我認為for循環應該在if語句內。

if x == 'yes':
    string = "Verocia was a mystical land located just south of Aborne"
    for char in string:
        sys.stdout.write(char)
        sys.stdout.flush()
        time.sleep(.03)
else:
    print ('Please restart program whenever you are ready!')

Answer 2

您必須縮進for循環。 Python中的循環具有else子句-在循環運行時執行，不會發出中斷

Answer 3

正確縮進for循環，您將得到結果。

import sys
import time
strWelcome = 'Hello comrade, Welcome!\n'
for char in strWelcome :
    sys.stdout.write(char)
    sys.stdout.flush()
    time.sleep(.03)
time.sleep(1)
x=raw_input('Are you ready to enter the fascinating Mists of Verocia? ')
if x == 'yes':
   str1 = "Verocia was a mystical land located just south of Aborne"
    for char in str1:
        sys.stdout.write(char)
        sys.stdout.flush()
        time.sleep(.03)
else:
    print ('Please restart program whenever you are ready!')

Answer 4

您的代碼中存在縮進問題。 它應該是：

import sys
import time
string = 'Hello comrade, Welcome!\n'
for char in string:
    sys.stdout.write(char)
    sys.stdout.flush()
    time.sleep(.03)
time.sleep(1)
x=raw_input('Are you ready to enter the fascinating Mists of Verocia? ')
if x == 'yes':
   string = "Verocia was a mystical land located just south of Aborne"
   for char in string:
     sys.stdout.write(char)
     sys.stdout.flush()
     time.sleep(.03)
else:
    print ('Please restart program whenever you are ready!')

Answer 5

在您的示例中，else條件連接到for語句。 else套件在for之后執行，但前提是for正常終止（不通過中斷）。