I'm having some trouble to understand the mapping with rpy2 object and python object.

I have a function(x) which return a tuple object in python, and i want to map this tuple object with R object list or vector.

**First, i'm trying to do this :**

```
# return a python tuple into this r object tlist
robjects.r.tlist = get_max_ticks(x) 

#Convert list into dataframe
r('x <- as.data.frame(tlist,row.names=c("seed","ticks"))')

```

FAIL with error :
 rinterface.RRuntimeError: Error in eval(expr, envir, enclos) : object 'tlist' not found

**So i'm trying an other strategy :**

```
robjects.r["tlist"]  = get_max_ticks(x)
r('x <- as.data.frame(tlist,row.names=c("seed","ticks"))')

```

FAIL with this error :
TypeError: 'R' object does not support item assignment

Could you help me to understand ?
Thanks a lot !!