我正在嘗試使用該函式來詢問計算面積的寬度和長度。但它總是說錯誤。
# defining functions
def space(length, width):
""" This function will calculate the area of floor, that needs
flooring. """
# asking for variables
length =int(input('Please enter the length of the room in meters: '))
width =int(input('Please enter the width of the room in meters: '))
area=length*width
return area
print('Flooring for the Future ')
space(length, width)
print('Types of Flooring')
print(' Cost per sq.m.')
print('1. Low Pile Carpet $18.75')
print('2. Shag Rug $11.05')
print('3. Parquet $14.35')
print('4. Lineleum $10.40')
print('5. Hardwood $28.15')
print()
opt=input('Please select type of flooring: ')
我已經定義了，但它仍然說錯誤。錯誤是...
Traceback (most recent call last):
File"main.py", line 29 in <module>
space(length, width)
NameError: name 'length' is not defined
uj5u.com熱心網友回復：
這很簡單，您正在呼叫space(length, width)但length尚未width宣告，您可以做的就是從空間中洗掉引數，留下這樣的空間，space()因為它在這個函式內部，您實際上分配了這個變數。
最終代碼如下所示：
# defining functions
def space():
""" This function will calculate the area of floor, that needs
flooring. """
# asking for variables
length =int(input('Please enter the length of the room in meters: '))
width =int(input('Please enter the width of the room in meters: '))
area=length*width
return area
print('Flooring for the Future ')
space()
print('Types of Flooring')
print(' Cost per sq.m.')
print('1. Low Pile Carpet $18.75')
print('2. Shag Rug $11.05')
print('3. Parquet $14.35')
print('4. Lineleum $10.40')
print('5. Hardwood $28.15')
print()
opt=input('Please select type of flooring: ')
uj5u.com熱心網友回復：
問題是您試圖將未宣告的變數傳遞給函式
space(length, width)
當您呼叫此函式時，您正在傳遞引數長度和寬度，但它們尚未定義
我還想提一下，您不需要傳遞任何變數，因此不需要應用它。
我已經看到有人回答了這個問題，但我想補充一點，當您回傳變數時，它沒有被分配給任何東西
area = space()
這應該有望解決您的問題！
uj5u.com熱心網友回復：
您將值傳遞給尚未定義的函式
def space( ):
length =int(input('Please enter the length of the room in meters: '))
width =int(input('Please enter the width of the room in meters: '))
area=length*width
return area
space()
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