Python basics: Common operations for strings

# Slices

#Slice gets part of data in object [start position: End position (not included): Step]Qpstr ="Shandong Jacky"result= Qpstr[1:3: 1]#Dong ZhangPrint(Result)#Quick Pick up top tworesult = Qpstr[:2]Print(Result)#quickly take the latter tworesult = Qpstr[-2:]Print(Result)#get the entire string quicklyresult =qpstr[:]#quickly get string reversal stringresult = Qpstr[::-1]Print(Result)

# Find detects if STR is contained in MYSTR, or returns 1 if the index value is returned.

# mystr.find (str, start=0, End=len (mystr))

" ABC de "  = Mystr.find ("a")#  (specifies what to look for, start position, end position (not included))find = Mystr.find ("ABC", 0, 1)print(Find)

# Index is the same as the Find () method, except if STR does not report an exception in MyStr

# Mystr.index (str, start=0, End=len (mystr))

index = Mystr.index ("ABC", 0, Len (mystr))print(index)

# Count Returns the number of occurrences of str between start and end in MyStr

# Mystr.count (str, start=0, End=len (mystr))

Count = Mystr.count ("a", 0, Len (mystr))print(count)

# Replace replaces str1 in mystr with STR2 if Count is specified, no more than count times

# Mystr.replace (str1, str2, Mystr.count (STR1))

Replace = Mystr.replace ("C""a", Mystr.count ("A  "))print(replace)

# Split slices mystr with str, if Maxsplit has a specified value, only maxsplit substrings are delimited
# Mystr.split (str= "", 2)

Split = Mystr.split ("", 2)  #  result array format print(split)

Python basics: Common operations for strings