To use Remote Desktop, the computer you access remotely can be running Windows 10 Home Edition or Windows 10 Professional.
a. true
b. false
Answer: b. false
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Which of the following statements is false.
a. You can import all identifiers defined in a module with a wildcard import of the form from modulename import * b. A wildcard import makes all of the module’s identifiers available for use in your code. c. Importing a module’s identifiers with a wildcard import can lead to subtle errors—it’s considered a dangerous practice that you should avoid. d. The following session is a safe use of a wildcard import: In [1]: e = 'hello' In [2]: from math import * In [3]: e Out[3]: 2.718281828459045 Answer: d. The following session is a safe use of a wildcard import: In [1]: e = 'hello' In [2]: from math import * In [3]: e Out[3]: 2.718281828459045 Actually, this session is a classic example of why you should not use wild-card imports. Initially, we assign the string 'hello' to a variable named e. After executing snippet [2] though, the variable e is replaced, possibly by accident, with the math module’s constant e, representing the mathematical floating-point value e. 4.14 Q2: Which of the following statements is false? a. Sometimes it’s helpful to import a module and use an abbreviation for it to simplify your code. The import statement’s as clause allows you to specify the name used to reference the module’s identifiers. For example, we can import the statistics module and access its mean function as follows: In [1]: import statistics as stats In [2]: grades = [85, 93, 45, 87, 93] In [3]: stats.mean(grades) Out[3]: 80.6 b. import…as is frequently used to import Python libraries with convenient abbreviations, like stats for the statistics module. c. The numpy module is typically imported with import numpy as npy d. Typically, when importing a module, you should use import or import…as statements, then access the module through the module name or the abbrevia-tion following the as keyword, respectively. This ensures that you do not acci-dentally import an identifier that conflicts with one in your code.
When you start vim, you are in ____ mode automatically.
A. extended B. insert C. line D. command
The easiest way to select a cell is to move the block plus sign _______________________ to the cell and then click.
Fill in the blank(s) with the appropriate word(s).
(Time Class Modification) It would be perfectly reasonable for the Time class of Figs. 10.17– 10.18 to represent the time internally as the number of seconds since midnight rather than the three integer values hour, minute and second. Clients could use the same public methods and get the same results. Modify the Time class of Fig. 10.17 to implement the time as the number of seconds since
midnight and show that there is no visible change in functionality to the clients of the class. [Note: This exercise nicely demonstrates the virtues of implementation hiding.] What will be an ideal response?