Python finds the position of a character in a string instance

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str_1= ' wo shi yi zhi da da niu ' char_1= ' i ' Npos=str_1.index (char_1) print (NPos)

Run Result: 7

======== is the use of find==========

str_1= ' wo shi yi zhi da da niu ' char_1= ' i ' Npos=str_1.find (char_1) print (NPos)

Results: 5

======== How do I find all the ' I ' positions in the string? ===========

#开挂模式str_1 = ' wo shi yi zhi da da niu ' char_1=str (input (' please input the char "you want: ')) Count=0str_list=list (str_1) for EA Ch_char in Str_list:count+=1 if each_char==char_1:  print (each_char,count-1)

Operation Result:

Please input the Char want:ii 0i 1i 2i 3