#1, riverFile = open('river.txt','r')
riverTest = riverFile.read()
 riverFile.close() print(riverTest) #2,
 print(riverTest.replace(',',' ')) print(
riverTest.replace("'",' ')) print(riverTest) #3, print(riverTest.split('
 ')) riverList = riverTest.split(' ') #4,
 riverSet = set(riverList) print(
riverSet) riverDict = {} for word in
 riverSet: riverDict[word] = riverList.count(word) print(riverDict)
 for d in riverDict: print(d,riverDict
[d])#5, wordCountList = list(
riverDict.items()) print(
wordCountList) wordCountList.sort(
key=lambda x:x[1],reverse=True)
 print(wordCountList) #6, for i in
 range(20): print(wordCountList[1])
 #7, riverCountFile = open('riverCou
nt.txt',mode='a',encoding='utf-8')
 for i in range(len(wordCountList)):
 riverCountFile.write(str
(wordCountList[i][1])+'
 '+wordCountList[i][0]+'\n')
riverCountFile.close()
  File "C:/Users/teacher/PycharmProjects/123/venv/456789.py", line 3
    riverFile.close() print(riverTest) #2,
    ^
IndentationError: unexpected indent

Process finished with exit code 1