You don’t need to learn Android/ Java and iOS/ Swift to build real native mobile apps!

Flutter – a framework developed by Google – allows you to learn one language (Dart) and build beautiful native mobile apps in no time. Flutter is a SDK providing the tooling to compile Dart code into native code and it also gives you a rich set of pre-built and pre-styled UI elements (so called widgets) which you can use to compose your user interfaces.

29. Complete Quizzes (100%) And Earn Points (3)- Python Questions & Answers (Q&A) – While and For Loops

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1. Question 1 of 5

   1. Question

   Q. What will be the output of the following Python code?

   x = ['ab', 'cd']
   for i in x:
       i.upper()
   print(x)

   0

   • [‘ab’, ‘cd’]
   • [‘AB’, ‘CD’]
   • [None, None]
   • none of the mentioned
   Correct
   

   Explanation: The function upper() does not modify a string in place, it returns a new string which isn’t being stored anywhere

   0

   Incorrect
   

   Explanation: The function upper() does not modify a string in place, it returns a new string which isn’t being stored anywhere

   0
2. Question 2 of 5

   2. Question

   Q.

   What will be the output of the following Python code?

   i = 1
   while True:
       if i%3 == 0:
           break
       print(i)
    
       i + = 1

   0

   • 1 2
   • 1 2 3
   • error
   • none of the mentioned
   Correct
   

   Explanation: SyntaxError, there shouldn’t be a space between + and = in +=.

   0

   Incorrect
   

   Explanation: SyntaxError, there shouldn’t be a space between + and = in +=.

   0
3. Question 3 of 5

   3. Question

   Q.

   What will be the output of the following Python code?

   i = 5
   while True:
       if i%0O11 == 0:
           break
       print(i)
       i += 1

   0

   • 5 6 7 8 9 10
   • 5 6 7 8
   • 5 6
   • error
   Correct
   

   Explanation: 0O11 is an octal number.

   0

   Incorrect
   

   Explanation: 0O11 is an octal number.

   0
4. Question 4 of 5

   4. Question

   Q.

   What will be the output of the following Python code?

   i = 2
   while True:
       if i%3 == 0:
           break
       print(i)
       i += 2

   0

   • 2 4 6 8 10 …
   • 2 4
   • 2 3
   • error
   Correct
   

   Explanation: The numbers 2 and 4 are printed. The next value of i is 6 which is divisible by 3 and hence control exits the loop.

   0

   Incorrect
   

   Explanation: The numbers 2 and 4 are printed. The next value of i is 6 which is divisible by 3 and hence control exits the loop.

   0
5. Question 5 of 5

   5. Question

   Q.

   What will be the output of the following Python code?

   True = False
   while True:
       print(True)
       break

   0

   • True
   • False
   • None
   • none of the mentioned
   Correct
   

   Explanation: SyntaxError, True is a keyword and it’s value cannot be changed.

   0

   Incorrect
   

   Explanation: SyntaxError, True is a keyword and it’s value cannot be changed.

   0

Flutter is extremely trending and gets used for major Google apps like their Adwords app – it’s now marked as “ready for production”, hence now is the time to jump in and learn it!

30. Complete Quizzes (100%) And Earn Points (3)- Python Questions & Answers (Q&A) – While and For Loops

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2. Review

1. Question 1 of 5

   1. Question

   Q. What will be the output of the following Python code?

   i = 0
   while i < 5:
       print(i)
       i += 1
       if i == 3:
           break
   else:
       print(0)

   0

   • 0 1 2 0
   • 0 1 2
   • error
   • none of the mentioned
   Correct
   

   Explanation: The else part is not executed if control breaks out of the loop.

   0

   Incorrect
   

   Explanation: The else part is not executed if control breaks out of the loop.

   0
2. Question 2 of 5

   2. Question

   Q. What will be the output of the following Python code?

   x = "abcdef"
   while i in x:
       print(i, end=" ")

   0

   • a b c d e f
   • abcdef
   • i i i i i i …
   • error
   Correct
   

   Explanation: NameError, i is not defined.

   0

   Incorrect
   

   Explanation: NameError, i is not defined.

   0
3. Question 3 of 5

   3. Question

   Q.

   What will be the output of the following Python code?

   x = "abcdef"
   i = "a"
   while i in x:
       print('i', end = " ")

   0

   • no output
   • i i i i i i …
   • a a a a a a …
   • a b c d e f
   Correct
   

   Explanation: As the value of i or x isn’t changing, the condition will always evaluate to True.

   0

   Incorrect
   

   Explanation: As the value of i or x isn’t changing, the condition will always evaluate to True.

   0
4. Question 4 of 5

   4. Question

   Q.

   What will be the output of the following Python code?

   x = "abcdef"
   i = "a"
   while i in x:
       x = x[:-1]
       print(i, end = " ")

   0

   • i i i i i i
   • a a a a a a
   • a a a a a
   • none of the mentioned
   Correct
   

   Explanation: The string x is being shortened by one character in each iteration.

   0

   Incorrect
   

   Explanation: The string x is being shortened by one character in each iteration.

   0
5. Question 5 of 5

   5. Question

   Q. What will be the output of the following Python code?

   x = "abcdef"
   i = "a"
   while i in x[:-1]:
       print(i, end = " ")

   0

   • a a a a a
   • a a a a a a
   • a a a a a a …
   • a
   Correct
   

   Explanation: String x is not being altered and i is in x[:-1].

   0

   Incorrect
   

   Explanation: String x is not being altered and i is in x[:-1].

   0

This course will teach Flutter & Dart from scratch, NO prior knowledge of either of the two is required! And you certainly don’t need any Android or iOS development experience since the whole idea behind Flutter is to only learn one language.

You’ll learn Flutter not only in theory but we’ll build a complete, realistic app throughout this course. This app will feature both all the core basics as well as advanced features like using Google Maps, the device camera, adding animations and more!

With Flutter, you’ll be able to write code only once and ship your apps both to the Apple AppStore and Google Play.

Use Google’s Material Design to build beautiful, yet fully customizable, apps in no time with almost zero effort. You can use the rich widget suite Flutter provides to add common UI elements like buttons, switches, forms, toolbars, lists and more – or you simply build your own widgets – Flutter makes that a breeze, too.

Here’s what’s included in the course:

• Detailed setup instructions for both macOS and Windows
• A thorough introduction to Flutter, Dart and the concept behind widgets
• An overview of the built-in widgets and how you may add your own ones
• Debugging tipps & tricks
• Page navigation with tabs, side drawers and stack-based navigation
• State management solutions
• Handling and validating user input
• Connecting your Flutter app to backend servers by sending Http requests
• User authentication
• Adding Google Maps
• Using native device features like the camera
• Adding beautiful animations & page transitions
• How to publish your app to the app stores
• And more!

This course is for you if …

• You’re interested in building real native mobile apps for the two most popular mobile platforms – iOS and Android
• You want to explore the full set of features Flutter offers
• Don’t want to spend hours learning two completely different languages

Course prerequisites:

• Basic programming language knowledge will help a lot but is not a hard requirement
• You DON’T need to know Flutter or Dart
• You DON’T need to know iOS (Swift/ObjectiveC) or Android (Java)