Question

这是我尝试并得到的错误：

$ENV:TEMP

错误：

a = 1
b = 2
c = 3
d = 4
e = 5

if(1):
    get = str(a) +","       #Line 1
          +str(b) +","      #Line 2
          +str(c) +","      #Line 3
          +str(d) +","      #Line 4
          +str(e)       #Line 5
else:
    get = ",,,,,"
print(get)

然后我尝试删除空格：

  File "testingpython.py", line 8
    +str(b) +","      #Line 2
    ^
IndentationError: unexpected indent

错误：

a = 1
b = 2
c = 3
d = 4
e = 5

if(1):
    get = str(a) +","       #Line 1
+str(b) +","      #Line 2
+str(c) +","      #Line 3
+str(d) +","      #Line 4
+str(e)       #Line 5
else:
    get = ",,,,,"
print(get)

请告诉我，当将字符串值放在单独的行上时如何将其分配给变量。

Answer 1

在Python中，我们通常使用\符号将单个语句分成多行 iff ，该语句不在括号内，如下所示：

result = "a" + "b" + "c"

可以表示为：

result = "a" + \
         "b" + \
         "c"

或者如果语句带有括号，则不需要\为：

result = ("a" + 
          "b" + 
          "c")

Answer 2

最简单的解决方案是将行包裹在括号内以指示它们属于同一行：

if(1):
    get = ( str(a) +","       #Line 1
          +str(b) +","      #Line 2
          +str(c) +","      #Line 3
          +str(d) +","      #Line 4
          +str(e)       #Line 5
    )
else:
    get = ",,,,,"
print(get)

但是您可以使用更短的方法：

get = ','.join(str(s) for s in [a, b, c, d, e])

Python将字符串语句串联放置在单独的行上

2 个答案: