June fifth day

lst = [ "too dark", "wusir", "chicken", [ "56", [ "wins more negative"]] "Anhui"] 
Print (LST [2] [. 1]) 
Print (LST ) 
LST [. 1] = LST [. 1] .capitalize () 
Print (LST) 
LST [. 3] .append ( "coke") 
Print (LST) 
LST [0] = LST [0] .replace ( "black", " white ") 
Print (LST) 
LST [. 3] [0] = LST [. 3] [0] .replace (". 5 "," of ") 
Print (LST [. 3] [0]) 



TU = (1,44, "Coke", [ "you advance", "i.e. false"]) 
for EL in TU: 
    Print (EL) 
TU [. 3] .append ( "123") 
Print (TU) 

count #range 
SUM = 0 
for I Range in (101): 
    IF I% 2 == 0: 
        SUM = SUM - I 
    the else:
        sum = sum + i
print(sum)
"""
"""
li = ["alex", "WuSir", "ritian", "barry", "wenzhou"]
l2 = [1, "a", 3, 4, "heart"]
print(len(li))
li.append("seven")
print(li)
li.insert(1,"Tony")
print(li)
li.insert(2,"Kelly")
print(li)
li.extend(l2)#迭代添加
print(li)
s = "qwert"
li.extend(s)
print(li)
li.remove("e")
print(li)
delt = li.pop(1)
print(li)
print(delt)
del li[1:4]
print(li)
li.reverse()
print(li)
print(li.count("alex"))
"""
"""
li = [1, 3, 2, "a", 4, "b", 5, "c"]
l1 = li[:3]
print(l1)
l2 = li[3:6] L4 = Li [1: 6: 2]Print (L3)L3 = Li [:: 2]
Print (L2)



print(l4)
l5 = li[7:]
print(l5)
l6 = li[-3::-2]
print(l6)

#lis = [2,3,"k",["qwe",20,["k1",["tt",3,"1"]],89],"ab","abv"]
#将tt转为大写
#lis[3][2][1][0] = lis[3][2][1][0].upper()
#print(lis)
#lis[3][2][1][0] = lis[3][2][1][0].replace("tt","TT")
#print(lis)
#lis[3][2][1][1] = 100
#print(lis)
#lis[3][2][1][1] = str(lis[3][2][1][1] + 97)
#print(lis)
#lis[3][2][1][2] = 101
#print(lis)
#lis[3][2][1][2] = str(int(lis[3][2][1][2]) + 100)
#print(lis)
li = ["alex", "erict", "rain"]
s = ""
for c in li:        #累加
    s = s + c + "_"
print(s[:len(s)-1])
"""