Python 2.7 Python 2中的错误函数
我有以下python代码Python 2.7 Python 2中的错误函数,python-2.7,Python 2.7,我有以下python代码 def nhap(a, b): a = input("Enter number a: ") b = input("ENter number b: ") def plus(a, b): nhap(a, b) print "Sum 2 so la: ", a + b def minus(a, b): nhap(a, b) print "Minus 2 so la: ", a - b def asterisk(a,
def nhap(a, b):
a = input("Enter number a: ")
b = input("ENter number b: ")
def plus(a, b):
nhap(a, b)
print "Sum 2 so la: ", a + b
def minus(a, b):
nhap(a, b)
print "Minus 2 so la: ", a - b
def asterisk(a, b):
nhap(a, b)
print "Asterisk 2 so la: ", a*b
def slash(a, b):
nhap(a, b)
print "Slash 2 so la: ", a/b
def start():
while True:
print "==================="
print "[0] Enter number"
print "[1] Sum"
print "[2] except"
print "[3] asterisk"
print "[4] slash"
print "[5] exit"
print "==================="
num = raw_input().strip()
if num == '0':
nhap(a, b)
elif num == '1':
cong(a, b)
elif num == '2':
tru(a, b)
elif num == '3':
nhan(a, b)
elif num == '4':
chia(a, b)
elif num == '5':
exit()
start()
当我运行我的程序时,我收到以下输出和错误
===================
[0] Enter number
[1] Sum
[2] except
[3] asterisk
[4] slash
[5] exit
===================
0
Traceback (most recent call last):
File "abc.py", line 46, in <module>
start()
File "abc.py", line 35, in start
nhap(a, b)
NameError: global name 'a' is not defined
===================
[0]输入数字
[1] 总数
[2] 除了
[3] 星号
[4] 刀砍
[5] 出口
===================
0
回溯(最近一次呼叫最后一次):
文件“abc.py”,第46行,在
开始()
文件“abc.py”,第35行,开头
nhap(a、b)
NameError:未定义全局名称“a”
如何正确调用函数
nhap()
,以接受两个数字并执行正确的数学运算?在函数nhap
中可以得到a
和b
。注意,它不接受a
和b
,而是从控制台输入获取它们并返回。我们需要的是让它以元组的形式返回它们。我们开始:
#!/usr/bin/python
def nhap():
a = input("Enter number a: ")
b = input("ENter number b: ")
return (a, b)
def plus():
(a,b) = nhap()
print "Sum 2 so la: ", a + b
def minus():
(a, b) = nhap()
print "Minus 2 so la: ", a - b
def asterisk():
(a, b) = nhap()
print "Asterisk 2 so la: ", a*b
def slash():
(a, b) = nhap()
print "Slash 2 so la: ", a/b
def start():
while True:
print "Enter number"
print "==================="
print "[1] Sum"
print "[2] except"
print "[3] asterisk"
print "[4] slash"
print "[nother button] exit"
print "==================="
num = raw_input().strip()
if num == '1':
plus()
elif num == '2':
minus()
elif num == '3':
asterisk()
elif num == '4':
slash()
else:
exit()
start()
应添加/修复的内容:在
nhap
功能中处理非数字输入。我把它留给你了 在start
函数中,您没有实例化这两个变量。@KevinKien现在一切都安排好了吗?