Question

library(stringdist)

stringdistmatrix(df, df) == 0

#      [,1]  [,2]  [,3]
#[1,]  TRUE  TRUE FALSE
#[2,]  TRUE  TRUE FALSE
#[3,] FALSE FALSE  TRUE

我不知道如何修复我的代码。

Answer 1

您忘记了函数中的return语句，这可能就是问题

Answer 2

下面你会找到一些有用的评论来解决你的问题：

import time as t
t = t.time    # Don't name this the same as your time library
              # Also use t.time() instead of t.time
starttime = t
def calcprod():
    prod = 1
    for i in range(1, 1000000):
        prod = prod * i
        # return a value here (hint: cast the result to a string)
p = calcprod()
print("The result is %s digits" % (str(len(p))))
endtime = t    # This assigns the same value to 'endtime' as starttime.
               # You need to measure the current time again.
               # How can you do this?
print("It took %s seconds to calculate" % (starttime - endtime))
                # Does it make sense to calculate starttime-endtime?
                # Which one is the bigger value?

为什么我一直收到一个错误，说在etime中e是Python中无效的语法？

2 个答案: