Python's%s string,%d integer,%f floating-point

%s

1string="Hello"    2         3     #%s The result is hello when printing4     Print "string=%s"% string#Output:string=hello5         6     #%2s means that the string length is 2, and when the original string is longer than 2 o'clock, it is printed at the original length, so the%2s print result is still Hello7     Print "string=%2s"% string#Output:string=hello8         9     #%7s means the string length is 7, when the length of the original string is less than 7 o'clock, the left side of the original string is blank,Ten     #so the print result of%7s is Hello One     Print "string=%7s"% string#output:string= Hello A          -     #%-7s means string length is 7, when the length of the original string is less than 7 o'clock, the right side of the original string to fill the space, -     #so the print result of%-7s is Hello the     Print "string=%-7s!"% string#Output:string=hello!  -          -     #%.2s means to intercept the first 2 characters of a string, so%.2s prints the result of the He -     Print "string=%.2s"% string#Output:string=he +          -     #%.7s means to intercept the first 7 characters of a string, which is the string itself when the original string is less than 7 o'clock long . +     #so the print result of%.7s is Hello A     Print "string=%.7s"% string#Output:string=hello at          -     #%a.bs This format is a synthesis of the above two formats, starting with the number B after the decimal point to intercept the string, -     #when the length of the truncated string is less than a, you also need to fill the left side of the space -     Print "string=%7.2s"% string#output:string= He -     Print "string=%2.7s"% string#Output:string=hello -     Print "string=%10.7s"% string#output:string= Hello in          -     #You can also use%*.*s to represent precision, and the values of two * are specified in the first two digits of the following parentheses, respectively to     Print "string=%*.*s"% (7,2,string)#output:string= He

d%

1Num=142         3     #%d results when printing4     Print "num=%d"% num#output:num=145         6     #%1d means that the printed result is a 1-bit integer, and when the number of digits in the integer exceeds 1 bits, the original value is printed, so the%1d is printed as7     Print "num=%1d"% num#output:num=148         9     #%3d means that the printed result is a 3-bit integer, and when the number of digits in the integer is not 3 bits, the left side of the integer is blank, so the print result of the%3d isTen     Print "num=%3d"% num#output:num= One          A     #%-3d means that the printed result is a 3-bit integer, and when the number of digits in the integer is not 3 bits, the right side of the integer is blank, so the%3d print is 14_ -     Print "num=%-3d"% num#output:num=14_ -          the     #%05d means that the printed result is a 5-bit integer, and when the number of digits in the integer is not 5 bits, the left side of the integer is 0, so the%05d print is 00014 -     Print "num=%05d"% num#output:num=00014 -          -     #%.3d 3 After the decimal point means that the printed result is a 3-bit integer, +     #when the number of digits in an integer is not 3 bits, the left side of the integer is 0, so the%.3d print result is 014 -     Print "Num=%.3d"% num#output:num=014 +          A     #%.0003d 0003 and 3 after the decimal point represent 3, which means that the printed result is a 3-bit integer, at     #when the number of digits in an integer is not 3 bits, 0 is added to the left of the integer, so the%.3d print is 014 -     Print "num=%.0003d"% num#output:num=014 -          -     #%5.3d is a combination of two methods of completion, when the number of digits is not enough 3 o'clock, first on the left 0, or not enough 5 bits, and then on the left to fill the space, -     #The rule is to fill 0 priority, the final length selection of the larger one, so%5.3d printing results or 014 -     Print "Num=%5.3d"% num#output:num= 014 in          -     #%05.3d is a combination of two methods of completion, when the number of digits is not enough 3 o'clock, first on the left 0, or not enough 5 bits, to     #because it is 05, and then 0 on the left, the final length of the selected value of the larger one, so%05.3d printing results or 00014 +     Print "Num=%05.3d"% num#output:num=00014 -          the     #You can also use%*.*d to represent precision, and the values of two * are specified in the first two digits of the following parentheses, respectively *     #as follows, but this way 04 loses the function of 0, can only fill the space, only after the decimal point 3 to fill 0 $     Print "num=%*.*d"% (04,3,num)#output:num= 014

%f

1     ImportMath2         3     #%a.bf,a indicates the print length of the floating-point number, and B indicates the precision after the decimal point of the floating point4         5     #only%f when the original value, the default is the number of 5 digits after the decimal point6     Print "pi=%f"% Math.PI#output:pi=3.1415937         8     #just%9f, the print length of 9 digits, the decimal point also accounted for one bit, not enough left to fill the space9     Print "pi=%9f"% Math.PI#output:pi=_3.141593Ten          One     #only. When there are no subsequent digits, the decimal output integer is removed, and 03 is not enough 3 digits to the left of 0 A     Print "PI=%03.F"% Math.PI#output:pi=003 -          -     #%6.3f indicates that the decimal point is accurate to 3 digits, with a total length of 6 digits, including a decimal point, not enough left fill space the     Print "pi=%6.3f"% Math.PI#output:pi=_3.142 -          -     #%-6.3f indicates that the decimal point is accurate to 3 digits, with a total length of 6 digits, including a decimal point, not enough right fill space -     Print "pi=%-6.3f"% Math.PI#output:pi=3.142_ +          -     #You can also use%*.*f to represent precision, and the values of two * are specified in the first two digits of the following parentheses, respectively +     #as follows, but this way 06 loses the function of 0, can only fill the space A     Print "pi=%*.*f"% (06,3,MATH.PI)#output:pi=_3.142

Python's%s string,%d integer,%f floating-point