What will be the output of the python code shown below for various styles of format specifiers?
x=1234
res='integers:...%d...%-6d...%06d' %(x, x, x)
res
a) ‘integers:…1234…1234 …001234’
b) ‘integers…1234…1234…123400’
c) ‘integers:… 1234…1234…001234’
d) ‘integers:…1234…1234…001234’
Explanation: The code shown above prints 1234 for the format specified %d, ‘1234 ’ for the format specifier %-6d (minus ‘-‘ sign signifies left justification), and 001234 for the format specifier %06d. Hence the output of this code is: ‘integers:…1234…1234 …001234’
What will be the output of the following Python code snippet?
x=3.3456789
'%f | %e | %g' %(x, x, x)
a) Error
b) ‘3.3456789 | 3.3456789+00 | 3.345678’
c) ‘3.345678 | 3.345678e+0 | 3.345678’
d) ‘3.345679 | 3.345679e+00 | 3.34568’
Explanation: The %f %e and %g format specifiers represent floating point numbers in different ways. %e and %E are the same, except that the exponent is in lowercase. %g chooses the format by number content. Hence the output of this code is: ‘3.345679 | 3.345679e+00 | 3.34568’.
What will be the output of the following Python code snippet?
x=3.3456789
'%-6.2f | %05.2f | %+06.1f' %(x, x, x)
a) ‘3.35 | 03.35 | +003.3’
b) ‘3.3456789 | 03.3456789 | +03.3456789’
c) Error
d) ‘3.34 | 03.34 | 03.34+’
Explanation: The code shown above rounds the floating point value to two decimal places. In this code, a variety of addition formatting features such as zero padding, total field width etc. Hence the output of this code is: ‘3.35 | 03.35 | +003.3’.
What will be the output of the following Python code snippet?
x=3.3456789
'%s' %x, str(x)
a) Error
b) (‘3.3456789’, ‘3.3456789’)
c) (3.3456789, 3.3456789)
d) (‘3.3456789’, 3.3456789)
Explanation: We can simply convert strings with a %s format expression or the str built-in function. Both of these methods have been shown in this code. Hence the output is: ) (‘3.3456789’, ‘3.3456789’)
What will be the output of the following Python code snippet?
'%(qty)d more %(food)s' %{'qty':1, 'food': 'spam'}
a) Error
b) No output
c) ‘1 more foods’
d) ‘1 more spam’
Explanation: String formatting also allows conversion targets on the left to refer to the keys in a dictionary coded on the right and fetch the corresponding values. In the code shown above, (qty) and (food) in the format string on the left refers to keys in the dictionary literal on the right and fetch their assorted values. Hence the output of the code shown above is: 1 more spam.
What will be the output of the following Python code snippet?
a='hello'
q=10
vars()
a) {‘a’ : ‘hello’, ‘q’ : 10, ……..plus built-in names set by Python….}
b) {……Built in names set by Python……}
c) {‘a’ : ‘hello’, ‘q’ : 10}
d) Error
Explanation: The built in function vars() returns a dictionary containing all the variables that exist in the place. Hence the output of the code shown above is: {‘a’ : ‘hello’, ‘q’ : 10, ……..plus built-in names set by Python….}
