python conditional assignment

Copy Code code as follows: MyVar = 1 Def myfunc ():MyVar + 1 MyFunc () An error is prompted: Unboundlocalerror:local variable ' myVar ' referenced before assignment Python assumes that if you assign a value to a variable anywhere in the body of the function, Python adds the name to the local namespace. Statement MyVar + = 1 assigns a value to th

root, bin or hadoop under the/usr directory;12. Find all files whose contents have been modified and are not root or Hadoop for the last week in/etc directory;13. Find all files on the current system that are not owned by the master or group, and have been visited in the last week;14. Find all files that are larger than 20k and type ordinary files in/etc directory;15, look for all the users in/etc directory do not have permission to write files;16. Find at least one class of users who do not ha

When using the following code for array initialization>>>a = [[0]*3]*3] [[0,0,0], [0,0,0], [0,0,0]]>>>a[1][1] = 1[[0,1, 0], [0,1 , 0], [0,1, 0]]>>>b = [[0,0,0],[0,0,0],[0,0,0]][[0,0,0], [0,0,0], [0,0,0]]> >>B[1][1] = 1[[0,0,0], [0,1, 0], [0,0,0]This is because of the initialization problem, because with a = [[0]*3]*3] initializes the array, it represents a reference to the list, so when you modify a value, the entire list is modified.If you initialize b=[[0,0,0],[0,0,0],[0,0,0]] Then the above o

Job RequirementsAlex 100000Rain 80000Egon 50000Yuan 30000-----above are info.txt file-----Implementation results:Read employees and their payroll information from the Info.txt file, and finally write the revised or increased employee payroll information to the original Info.txt file.Effect Demo:1. Check the employee's salary2. Revise employee's salary3. Add new Employee Records4. Exit>>:1Please enter the name of the employee to be queried (ex: Alex): AlexAlex's salary is: 100000.1. Check the emp