Please help adding new columns "Lat $"$ and "Lon" to "calls" data frame. code does not work returns "Question $3$a: Join Tables

Let's include the GPS data into our calls data. In the below cell, use calls$\_$lat$\_$lon to add two new columns called Lat and Lon to the calls dataframe.

Hint: pd$.$merge $($documentation$)$ could be useful here. Note that the order of records in calls and calls$\_$lat$\_$lon are the same.

$[69]$: #merged$\_$df $=$ calls.merge$($calls$\_$Lat$\_$lon, how$=$'inner', right$\_$on$=$'Block$\_$Location', Left$\_$on$=[\text{'}$Lat$\text{'},$ 'Lon'$])$

#print$($merged$\_$df$.$head$())$

calls$\_$lat$\_$lon.head$(5)$

# Your code above this line

$[69]$:

$\backslash$table$[[$Lat$,$Lon$],[037\mathrm{.}869058,-122\mathrm{.}270455]]$

$037\mathrm{.}869058-122\mathrm{.}270455$

$1,37\mathrm{.}869058-122\mathrm{.}270455$

$237\mathrm{.}864908,-122\mathrm{.}267289$

$3,37\mathrm{.}863934,-122\mathrm{.}250262$

$4,37\mathrm{.}86066,-122\mathrm{.}253407$

$[37]$:

q$3$a results:

q$3$a $-1$ result:ValueError: len$($right$\_$on$)$ must equal len$($left$\_$on$)"$