SyntaxError: invalid syntax

[Truman]

I'm working on some problem and the goal is to count the frequency of each interval. There is a table with ratings ( sixth row ).

opened_file = open('AppleStore.csv')
from csv import reader
read_file = reader(opened_file)
apps_data = list(read_file)
user_ratings = []
for row in apps_data[1:]:
    n_user_ratings.append(int(row[5])
                        
ratings_max = max(n_user_ratings)
ratings_min = min(n_user_ratings)
                       
user_ratings_freq = {'0 - 10000': 0, '10000 - 100000': 0, '100000 - 500000': 0,'500000 - 1000000': 0, '1000000+': 0}
    
for row in apps_data[1:]:
    user_ratings = int(row[5])
                        
    if user_ratings <= 10000:
        user_ratings_freq['0 - 10000'] += 1
        
    elif 10000 < user_ratings <= 100000:
        user_ratings_freq['10000 - 100000'] += 1
        
    elif 100000 < user_ratings <= 500000:
        user_ratings_freq['100000 - 500000'] += 1
        
    elif 500000 < user_ratings <= 1000000:
        user_ratings_freq['500000 - 1000000'] += 1
        
    elif user_ratings > 1000000:
        user_ratings_freq['1000000+'] += 1
                        
print(user_ratings_freq)

Error:
ratings_max = max(n_user_ratings)
              ^
SyntaxError: invalid syntax

Any idea why this error appeared?

[Larz60+]

Search your code for other occurrences of max.
My guess would be that it got redefined somewhere, probably by mistake.

[snippsat]

Count parentheses on line-7.

[Truman]

Count parentheses on line-7.

after I made a correction got this error:

Error:
NameErrorTraceback (most recent call last)
<ipython-input-1-0c555430149c> in <module>()
      5 user_ratings = []
      6 for row in apps_data[1:]:
----> 7     n_user_ratings.append(int(row[5]))
      8 
      9 ratings_max = max(n_user_ratings)

NameError: name 'n_user_ratings' is not defined

...and made a correction in line 5 and now it's OK. Thank you.