Expected LPAREN error when trying to loop in r

Question

I'm trying to run the following code:

    files <- Sys.glob("*.csv")
    test <- data.frame()
    for file in files {
      sally <- read.csv(file, colClasses = c(status_id = "factor", text = "character"))
      test <- rbind(test, sally)
    }

In line 3 I'm getting the following error:

    unexpected token 'file', expected 'LPAREN'

I've never had this issue with for loops before. Please help.

Solution

You haven't formatted the for statement properly. You have

for file in files {

when you need

for (file in files) {

The LPAREN in the error message is short for "left parenthesis", i.e. (.

Comments

[Wade Byron Profe]

Oh, gosh. That's me being totally mixed up between Python and r. Thank you.