当我运行命令 pipx install eth-brownie 时，我收到以下错误消息，
fatal error from pip prevented installation. Full pip output in file:
/Users/gentgjonbalaj/.local/pipx/logs/cmd_2021-10-22_11.10.14_pip_errors.log
pip failed to build package:
cytoolz
Some possibly relevant errors from pip install:
cytoolz/functoolz.c:23087:19: error: implicit declaration of function '_PyGen_Send' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cytoolz/functoolz.c:23092:19: error: implicit declaration of function '_PyGen_Send' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cytoolz/functoolz.c:23176:19: error: implicit declaration of function '_PyGen_Send' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
error: command '/usr/bin/clang' failed with exit code 1
Error installing eth-brownie.
我尝试使用命令“pip install eth-brownie”，但我的终端显示“未找到 …
问:有些人喜欢用单词"LOL"垃圾邮件互联网聊天室.这通常会使一些其他用户感到恼火,他们将通过宣布"再多一次LOL和我出局"作出回应.还有其他用户会通过发布"再多一个LOL而我已经出局'并且我已经出局"来模仿这个回应,等等,嵌套越来越多的层次"再多一个{X}我就出局了".完成递归lol()函数,该函数采用表示嵌套级别的正(非零)整数参数
("另外一个LOL,我出去了"代表一个级别的嵌套).该函数返回一个字符串,其中包含上面字符串的适当嵌套版本.例如,lol(3)会返回字符串(再多一个LOL,我出去了,我出去了,我出去了).
我的解决方案
def lol(y):
middle = "LOL"
part1 = " One more "
part2 = " and I'm out"
templist = []
answer = ""
if y == 0:
print ("LOL")
else:
for i in range(y):
middle = middle + part2
for j in range(len(middle)):
templist.append(middle[j])
templist.reverse()
for k in range (y):
templist.append(part1)
templist.reverse()
for h in range(len(templist)):
answer = answer + templist[h]
print (answer)
我想看一个使用递归的解决方案.然后我很想看到最有效的解决方案.谢谢!