資工遊俠劉建春(AaA / Amzshar / 燕俠 / JCLIUL)之IT人柱力(仙人模式)

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 17 Aug 2025 08:41:00 +0000

2025.08.15(Fri)

PMP (Project Management Professional) --- PMP 3A Pass!

歷經87天的寒窗苦讀，終於考到我第十張證照 :D

Warren Edward Buffett: If you don't find a way to make money while you sleep, you will work until you die.

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 09 Feb 2025 06:05:00 +0000

. Warren Edward Buffett: If you don't find a way to make money while you sleep, you will work until you die.

. 巴菲特曾說過：如果你沒辦法在睡覺時也能賺錢，你就會工作到死掉的那一天。

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 08 Dec 2024 04:18:00 +0000

. .燕俠語錄 20241208:「[通靈之術] 職場溝通問題為什麼會出現？1. 經驗不足 2. 能力不行 3. 原則性不強 4. 粗心大意」--- 墨者燕俠(劉建春)

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sat, 07 Dec 2024 03:11:00 +0000

. .燕俠語錄 20241207:「上善若水」--- 墨者燕俠(劉建春)

「上善若水」：最善良的人有如水的品德。

老子〔道德經〕第八章：「上善若水。水善利萬物而不爭，處眾人之所惡，故幾於道。」

老子以水喻有德行的人，因為水有三項特性：

一是滋養萬物，利益眾生；

二是柔順無形，不與人爭；

三是就下而流，低卑自處。

這是指水是

滋潤萬物的雨露，

是川流不息的溪河，

是容納百川的大海，

而不是淹滅生靈的洪水暴雨，海嘯狂濤。可說是老子選擇性的審美觀點，以水性柔順、就下、利萬物來比喻有美德的人。

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Mon, 25 Nov 2024 14:28:00 +0000

.燕俠語錄 20241125:「在這個世界上，最偉大的成就並非那些永遠立於不敗之地的人；而是那些跌倒之後能夠再爬起來的人。」--- 墨者燕俠(劉建春)

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sat, 23 Nov 2024 13:20:00 +0000

.燕俠語錄 20241123:「只有做不做，沒有能不能，只要我去做了，終有一天必定成功。」--- 墨者燕俠(劉建春)

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Mon, 18 Nov 2024 13:26:00 +0000

.燕俠語錄 20241118: 「成功的人是跟別人學習經驗，失敗的人只跟自己學習經驗。」--- 墨者燕俠(劉建春)

[Python] 6/49 Big Lottery 大樂透程式, 過了今晚!

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 17 Nov 2024 09:28:00 +0000

. [Python] 6/49 大樂透程式, 過了今晚!.

import random

lotterys = random.sample(range(1,50), 7)
specialNum = lotterys.pop()

print("大樂透 中獎號碼: ", end="")
for lottery in sorted(lotterys):
    print(lottery, end=" ")
print("\n特別號: ", specialNum)
print("過了今晚!")

執行結果範例:

PS D:\DevTool\ZCode> & C:/Python312/python.exe d:/DevTool/ZCode/_Code/_Python/BigLotterys.py

大樂透中獎號碼: 13 19 22 34 40 43

特別號: 32

過了今晚!

[Python] 字典 dict { } 的 key, value 鍵、值互換

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 27 Oct 2024 03:48:00 +0000

.[Python] 字典 dict { } 的 key, item 鍵、值互換

--- --- --- --- --- --- --- --- ---

(1) 字典鍵值互換, 方法一 for 循環:

mydict = {'a': 1, 'b': 2, 'c': 3}
mydict_new = {}
for key, value in mydict.items():
    mydict_new[value] = key

print(mydict)
print(mydict_new)

---
>>> mydict = {'a': 1, 'b': 2, 'c': 3}
>>> mydict_new = {}
>>> for key, value in mydict.items():
...      mydict_new[value] = key
...
>>> print(mydict)
{'a': 1, 'b': 2, 'c': 3}
>>> print(mydict_new)
{1: 'a', 2: 'b', 3: 'c'}
>>>

--- --- --- --- --- --- --- --- ---

(2) 字典鍵值互換, 方法二列表生成器 generator:

mydict = {'a': 1, 'b': 2, 'c': 3}
mydict_new = dict([value, key] for key, value in mydict.items())
print(mydict)
print(mydict_new)

---
>>> mydict = {'a': 1, 'b': 2, 'c': 3}
>>> mydict_new = dict([value, key] for key, value in mydict.items())
>>> print(mydict)
{'a': 1, 'b': 2, 'c': 3}
>>> print(mydict_new)
{1: 'a', 2: 'b', 3: 'c'}

--- --- --- --- --- --- --- --- ---

(3) 字典鍵值互換, 方法三 zip:

mydict = {'a': 1, 'b': 2, 'c': 3}
mydict_new = dict(zip(mydict.values(), mydict.keys()))
print(mydict)
print(mydict_new)

---

>>> mydict = {'a': 1, 'b': 2, 'c': 3}
>>> mydict_new = dict(zip(mydict.values(), mydict.keys()))
>>> print(mydict)
{'a': 1, 'b': 2, 'c': 3}
>>> print(mydict_new)
{1: 'a', 2: 'b', 3: 'c'}

[Python] 傳回 ASCII 的 chr() 函數 vs 傳回字元的 Unicode 碼值 ord() 函數

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 27 Oct 2024 03:03:00 +0000

.[Python] 傳回 ASCII 的 chr() 函數 vs 傳回字元的 Unicode 碼值 ord() 函數

(1) 傳回 ASCII 的 chr() 函數:

>>> x1 = 65
>>> x2 = 66
>>> print(chr(x1))  // 或是 print(chr(65))
A
>>> print(chr(x2))  // 或是 print(chr(66))
B
>>>

---
>>> y1 = 97
>>> y2 = 98
>>> print(chr(y1))  // 或是 print(chr(97))
a
>>> print(chr(y2))  // 或是 print(chr(98))
b

(2) 傳回字元的 Unicode 碼值 ord() 函數:

>>> ch11 = 'A'
>>> ch12 = 'B'
>>> print(ord(ch11))  // 或是 print(ord( 'A'))
65
>>> print(ord(ch12))  // 或是 print(ord( 'B'))
66
>>>

---

>>> ch21 = 'a'
>>> ch22 = 'b'
>>> print(ord(ch21))  // 或是 print(ord( 'a'))
97
>>> print(ord(ch22))  // 或是 print(ord( 'b'))
98

[Python] name_list.reverse() and name_list[::-1]

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sat, 12 Oct 2024 08:30:00 +0000

(1) 方法1: name_list.reverse()

(2) 方法2: 使用 slice 切片 name_list[::-1]

# Example 1:
python3
>>>
>>> cars = ['Honda', 'BMW', 'Toyota', 'Ford']
>>> cars
['Honda', 'BMW', 'Toyota', 'Ford']
>>> cars[::-1]
['BMW', 'Ford', 'Toyota', 'BMW', 'Honda']
>>> cars.reverse()
>>> cars
['Ford', 'Toyota', 'BMW', 'Honda']

# Example 2:
>>> nums1 = [5, 3, 9, 2]
>>> nums1
[5, 3, 9, 2]
>>> nums2 = nums1[::-1]
>>> nums2
[2, 9, 3, 5]
>>> nums1.reverse()
>>> nums1
[2, 9, 3, 5]

Free ChatGP 3.5 for (TOEIC) English Speaking Practice / 免費 ChatGP 3.5 練習(多益)英語口說

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sat, 05 Oct 2024 10:30:00 +0000

Free ChatGP 3.5 for (TOEIC) English Speaking Practice / 免費 ChatGP 3.5 練習(多益)英語口說

// --- --- ---

. 簡單三步驟搞定:

. (1) 將下列 0001、0002 指令貼到 ChatPGT 訊息視窗

. (2) 點選右下角進階語音

. (3) 開始練習

// --- --- ---

Prompt 00001 (第0001指令)

Please remember: I may try to speak Chinese to you. But you can only answer me in English, no Chinese. That’s very important.

Purpose: I mainly use ChatGPT to learn TOEIC English.

Occupation: I am currently a Software Engineering.

English Proficiency: Basic level, so please use simple words when talking to me.

English Training Content: Mainly repetition and answering questions.

When I want to practice repetition: I will tell you, "I want to practice repetition." Please read the sentence for me to repeat after you.

When I want to practice answering questions: I will tell you, "I want to practice answering questions." Please ask me questions randomly from my specified sentences.

// --- --- ---

Prompt 00002 (第0002指令)

When I practice TOEIC English, I hope ChatGPT can follow these replies: You need to read the sentence one by one for me to repeat or answering questions. Response Language: Remember, please always reply in English. Even I speak in Chinese, you still need to response me in English.

That’s very important.

Shadowing Practice Steps:

First, I'll give you some sentences, and you'll read them to me in order. You need to read the following sentences one by one.

Second, I'll shadow each sentence after you.

Third, you'll tell me which word I pronounced unclearly, and ask me to repeat the word again until I say it right. If I keep saying the word wrong, please keep asking me to repeat until I say the word correctly.

Fourth, read the next sentence for me so I can repeat after you.

Fifth, after I finish all the sentences. Please show me a table of my score of my fluency and accuracy for each sentence. Remember, I need a table of my scores.

Answering Questions Practice Steps:

First, I'll give you three questions, and you'll ask me those questions randomly. You need to ask the questions I provided one by one.

Second, I'll try to answer the question you ask me.

Third, Very important step here. Do make sure you follow. you need to ask me one further question based on the answer I said.

Fourth, ask me the next questions.

Fifth, after I finish answering all three questions. Please show me a table of my score of my “Pronunciation” and “The content”

// --- --- ---

Prompt 00003 (第00003指令)

如果你想練習影子跟讀 [請自行輸入想練習問答的句子]

Here are the sentences I want to practice shadowing one by one.

I discovered BTW Radio over 20 years ago and have been a regular listener of your evening programming for at least a decade. I just want to say how much I enjoy your newest offering. I’ve been interested by many of the authors that have been featured on the show so far, but last evening’s guest was especially interesting. I remember James from when he was a little boy. I worked with his parents when they lived in New York, and I recall seeing James in his parents’ studio most days after he got out of school. I was surprised to learn that he has written about his childhood, and I look forward to reading his new book.

Thank you for the excellent program.

// --- --- ---

Prompt 00004 (第00004指令)

如果你想練習問答 [請自行輸入想練習問答的句子]

Here are the sentences I want to practice questions answering.

Bremen, Richard [9:34 A.M.]:

I just got off the phone with them. It looks like everything will arrive on Monday afternoon, so we

could actually begin the job on Tuesday.

Vega, Camila [9:35 A.M.]:

That’s good news. I’ll call the client this morning and let them know.

Bremen, Richard [9:35 A.M.]:

You should also remind them that we will begin working on the guestrooms first and work our way

toward the lobby and first-floor public areas last. We’ll send a large crew so the work can be

finished quickly.

Kato, Yuri [9:36 A.M.]:

How long do you think it will take to complete the job?

Bremen, Richard [9:37 A.M.]:

We can probably be finished by Friday, as we originally planned.

Kato, Yuri [9:38 A.M.]:

Excellent. They’re a new client with several locations and a high profile in the business community,

so I want things to go smoothly. I’m sure there will be more work with the in the long run if all goes

well.

[Python] Remove elements from a list

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Fri, 08 Mar 2024 15:19:00 +0000

[Python] Remove elements from a list

(1) Using the del keyword

(2) Using the list.remove(x) method

(3) Using the list.pop([x]) method

... ... ...

(1) Using the del keyword:

# Sample Code 1
list1 = [0, 1, 2, 3, 4, 5, 6]
del list1[0]
print(list1)
# [1, 2, 3, 4, 5, 6]

del list1[-1]
print(list1)
# [1, 2, 3, 4, 5]

del list1[:2]
print(list1)
# [3, 4, 5]

(2) Using the list.remove(x) method:

# Sample Code 2
list1 = [0, 1, 2, 3, 4, 5, 6]
list1.remove(2)
print(list1)
# [0, 1, 3, 4, 5, 6]

(3) Using the list.pop([x]) method:

# Sample Code 3
list1 = [0, 1, 2, 3, 4, 5, 6]
list1.pop()
print(list1)
# [0, 1, 2, 3, 4, 5]
list_removed = list1.pop(4)
print(list1)
# [0, 1, 2, 3, 5]

// End

[Python] Concatenate Lists / Merge Lists in Python

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Fri, 08 Mar 2024 15:04:00 +0000

[Python] Concatenate Lists / Merge Lists in Python

(1) Concatenating Lists with "+" Operator

(2) Utilizing the Extend() Method

(3) Applying the Itertools.chain() Function

(4) Native Method for List Concatenation (list.append())

(5) List Comprehension to concatenate lists

... ... ...

(1) Concatenating Lists with "+" Operator:

# Sample Code 1
list1 = [10, 11, 12, 13, 14]
list2 = [20, 30, 40]
res = list1 + list2
print ("Concatenated List: " + str(res))
# Concatenated List: [10, 11, 12, 13, 14, 20, 30, 40]

(2) Utilizing the Extend() Method:

Syntax: list.extend(iterable)

# Sample Code 2
list1 = [10, 11, 12, 13, 14]
list2 = [20, 30, 40]
list1.extend(list2)
print ("Concatenated List: ", list1)
# Concatenated List: [10, 11, 12, 13, 14, 20, 30, 40]

(3) Applying the Itertools.chain() Function:

# Sample Code 3
import itertools
list1 = [10, 11, 12, 13, 14]
list2 = [20, 30, 40]
res = list(itertools.chain(list1, list2))
print ("Concatenated List: " + str(res))
# Concatenated List: [10, 11, 12, 13, 14, 20, 30, 40]

(4) Native Method for List Concatenation (list.append()):

# Sample Code 4
list1 = [10, 11, 12, 13, 14]
list2 = [20, 30, 40]
for x in list2:
    list1.append(x)
print ("Concatenated List: ", list1)
# Concatenated List: [10, 11, 12, 13, 14, 20, 30, 40]

(5) List Comprehension to concatenate lists:

# Sample Code 5
list1 = [10, 11, 12, 13, 14]
list2 = [20, 30, 40]
res = [j for i in [list1, list2] for j in i]
print ("Concatenated List: " + str(res))
# Concatenated List: [10, 11, 12, 13, 14, 20, 30, 40]

// End

[Python][Regular Expressions][正規表示式] Python’s Regex Symbols

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Fri, 23 Feb 2024 15:42:00 +0000

... ... ...

[Regular Expressions][正規表示式] Python’s Regex Symbols

... ... ...

# Sample Code1:
import re
phoneNumRegex1 = re.compile(r'\d{3}-\d{3}-\d{4}')
mo1 = phoneNumRegex1.search('My number is 415-555-4242.')
print('Phone number found: ' + mo1.group())
# Phone number found: 415-555-4242

1. Grouping with Parentheses: ( )

2. Matching Multiple Groups with the Pipe: | 亦即 or

3. Optional Matching with the Question Mark: (wo)? 亦即 Optional = Match zero or one

4. Matching Zero or More with the Star: (wo)* 亦即 Match zero or more

5. Matching One or More with the Plus: (wo)+ 亦即 Match one or more (at least one)

6. Matching Speciﬁc Repetitions with Braces: {3}

7. The ﬁndall() Method: 回傳 list

8. Making Your Own Character Classes: [aeiouAEIOU]

# Sample Code2:
import re
vowelRegex = re.compile(r'[aeiouAEIOU]')
mo2 = vowelRegex.findall('RoboCop eats baby food. BABY FOOD.')
print(type(mo2))
# <class 'list'>
print(mo2)
# ['o', 'o', 'o', 'e', 'a', 'a', 'o', 'o', 'A', 'O', 'O']

9. The Caret (^ 跳脫符號: begin with) and Dollar Sign ($: end with) Characters

10. The Wildcard Character: . (dot) = wildcard 亦即 Match any character except for a new line.

11. Matching Everything with Dot-Star (.*):

dot . 表示: any single character except the newline

star * 表示: zero or more of the preceding character

# Sample Code3:
import re
nameRegex = re.compile(r'First Name: (.*) Last Name: (.*)')
mo3 = nameRegex.search('First Name: Al Last Name: Amzshar') 
print(mo3.group(1))
# 'Al' 
print(mo3.group(2))
# 'Amzshar'

12. Matching Newlines with the Dot Character: newlineRegex = re.compile('.*', re.DOTALL)

The ? matches zero or one of the preceding group.

The * matches zero or more of the preceding group.

The + matches one or more of the preceding group.

The {n} matches exactly n of the preceding group.

The {n,} matches n or more of the preceding group.

The {,m} matches 0 to m of the preceding group.

The {n,m} matches at least n and at most m of the preceding group.

{n,m}? or *? or +? performs a non-greedy (also called lazy) match of the preceding group.

^spam means the string must begin with spam.

spam$ means the string must end with spam.

The . (dot) = wildcard matches any character, except newline characters.

\d , \w , and \s match a digit, word, or space character, respectively.

\D , \W , and \S match anything except a digit, word, or space character, respectively.

[abc] matches any character between the brackets (such as a, b, or c).

[^abc] matches any character that isn’t between the brackets.

(1) Basic Syntax

(2) Regex Character Classes

[Python] Python’s basic data types

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Wed, 24 Jan 2024 14:44:00 +0000

. Python’s basic data types .

[Python] Python String format 字串格式化 : (1) 舊式字串格式化 %-formatting (2) 新式字串格式化 str.format() (3) 字串插值 f-string (Formatted String Literal) (4) Template Strings

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Mon, 01 Jan 2024 07:33:00 +0000

Python 在處理字串時, 由於版本的演變, 有太多種方法, 所以很容易搞混. 筆記整理一下.

(1) 舊式字串格式化 %-formatting:

string interpolation

初代 format string, 這是類似 C語言 printf 語法, 使用 % 格式,

例如: %s (字串), %d (十進位整數), %f (浮點數), 將 tuple 中的一組變量依照指定字串格式輸出.

# Example 1.1:
text = 'World'
print('Hello %s' % text)
# Hello world


# Example 1.2:
name = "John"
age = 23
print('%s is %d years old.' % (name, age))
# John is 23 years old.


# Example 1.3:
print('%x' % 11)  # 轉成十六進位
# b

(2) 新式字串格式化 str.format()

Python 2.6 (發布於 2008 年), 開始有新式字串格式化 str.format(), 透過{} 和 format 來代替 % 運算符號.

# Example 2.1:
text = 'World'
print('Hello {0}'.format(text))
# Hello world
print('Hello {}'.format(text))
# Hello world


# Example 2.2:
name = "John"
age = 23
print('{0} is {1} years old.'.format(name, age))
# John is 23 years old.
print('{} is {} years old.'.format(name, age))
# John is 23 years old.


# Example 2.3:
print('{:x}'.format(11))  # 轉成十六進位
# b


# Example 2.4:
print('{:.2f}'.format(3.1416))  # 保留小數點後兩位
# 3.14


# Example 2.5:
print('{:+.2f}'.format(3.1416))  # 帶符號保留小數點後兩位
# +3.14

細節可以參考 Ref3: Python format 格式化函数

https://www.runoob.com/python/att-string-format.html

(3) 字串插值 f-string (Formatted String Literal)

Python 3.6 (發布於 2016 年) 新增 f-string, 解決變量不易閱讀以及變量超長的問題.

# Example 3.1:
text = 'World'
print(f'Hello {text}')
# Hello world



# Example 3.2:
name = "John"
age = 23
print(f'{name} is {age} years old.')
# John is 23 years old.


# Example 3.3:
print(f'{11:x}')  # 轉成十六進位
# b


# Example 3.4:
print(f'{3.1416:.2f}')  # 保留小數點後兩位
# 3.14
a = 3.1416
print(f'{a:.2f}')  # 保留小數點後兩位
# 3.14


# Example 3.5:
print(f'{3.1416:+.2f}')  # 帶符號保留小數點後兩位
# +3.14

細節可以參考 Ref4: 制霸 Python f-string 各種格式使用方法

https://myapollo.com.tw/blog/python-f-string-formating-syntax/

(4) Template Strings:

# Example 4.1:
from string import Template
name = 'Bob'
t = Template('Hey, $name!')
t.substitute(name=name)
# 'Hey, Bob!'

--- --- ---

同場加映 : Python String 字串 join() 語法

# Example 5.1:
chars = ['P', 'y', 't', 'h', 'o', 'n']
text = "".join(chars)
print(text)  # 顯示：Python


# Example 5.2:
chars = ['P', 'y', 't', 'h', 'o', 'n']
text = "##".join(chars)
print(text)  # 顯示：P##y##t##h##o##n


# Example 5.3:
words = ["Python", "is", "awesome"]
text = " ".join(words)
print(text)  # 顯示：Python is awesome

--- --- ---

Ref1: 比較 Python 的格式化字串 — %-formatting、str.format()、 f-string
https://zoejoyuliao.medium.com/%E6%AF%94%E8%BC%83-python-%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%AD%97%E4%B8%B2-formatting-str-format-f-string-6d28487ba1d2

Ref2: 如何使用 Python 進行字串格式化

https://blog.techbridge.cc/2019/05/03/how-to-use-python-string-format-method/

Ref3: Python format 格式化函数

https://www.runoob.com/python/att-string-format.html

Ref4: 制霸 Python f-string 各種格式使用方法

https://myapollo.com.tw/blog/python-f-string-formating-syntax/

Ref5: Python String Formatting Best Practices

https://realpython.com/python-string-formatting/

// End.

Angular 超級入門教學 000

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Wed, 13 Dec 2023 14:21:00 +0000

...

Angular 超級入門教學 000

...

1. https://angular.io/ or https://angular.tw/

2. Install Node.js JavaScript runtime:

from https://nodejs.org/en

to D:\DevTool\nodejs\

3. Install Visual Studio Code:

from https://code.visualstudio.com/

4. Install the Angular CLI:

from https://angular.io/guide/setup-local
CMD> npm install -g @angular/cli

5. Create a workspace and initial application:

CMD> cd D:\DevTool\Angular

CMD> ng new HelloWorld

CMD> cd D:\DevTool\Angular\HelloWorld

CMD> npm start

> hello-world@0.0.0 start

> ng serve

Local: http://localhost:4200/

後記1:

CMD> npm start

對應到 package.json

// End

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Mon, 11 Dec 2023 16:12:00 +0000

.燕俠語錄 20231212: 吾日三省吾身: 我是誰? 我在哪? 我在這邊做什麼? --- 墨者燕俠(劉建春)

曾子曰：「吾日三省吾身，為人謀而不忠乎？與朋友交而不信乎？傳不習乎？」

IT 數位轉型 (IT Digital Transformation)

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sat, 09 Dec 2023 03:40:00 +0000

這幾年的 IT 數位轉型 (IT Digital Transformation) 持續發燒與演進.

1. 由傳統的 Physical Machine -> Virtual Server (VM) 發展到熱門的 K8S (Kubernetes) Container. + CI/CD Pipeline.

2. Serverless 雲端服務 (Cloud Service Models) 的演進:

地端(On-Promise) to Cloud Service.

IaaS (Infrastrcture as a Service) 基礎設施即服務: e.g. Google GCP, AWS EC2, Azure VM
PaaS (Platform as a Service) 平台即服務: e.g. Pivotal Cloud Foundry (PCF), Red Hat OpenShift (OKD)

SaaS (Software as a Service) 軟體即服務: e.g. Salesforce, Netflix, Spotify

3. DevOps and DevSecOps 的興起:

Under a DevOps model, development and operations teams are no longer “siloed.” Sometimes, these two teams are merged into a single team where the engineers work across the entire application lifecycle, from development and test to deployment to operations, and develop a range of skills not limited to a single function.

在 DevOps 模型之下，開發與營運團隊不再「孤軍奮戰。」有時，這兩個團隊會合併成為一個團隊，讓工程師負責整個應用程式生命週期中的工作，包含從開發和測試、部署以及營運，並發展出許多不限於單一功能的技能。

=> 學學 Azure GitOps, Gitlab, Github, Docker, Harbor, Helm, K8S (Kubernetes), CI/CD (Continuous Integration / Continuous Delivery or Continuous Deployment), ymal, AI, ML, AI-Ops, AI-ChatBot ...

4. 網站可靠性工程 SRE (Site Reliability Engineering):

Site reliability engineering (SRE) is the practice of using software tools to automate IT infrastructure tasks such as system management and application monitoring. Organizations use SRE to ensure their software applications remain reliable amidst frequent updates from development teams. SRE especially improves the reliability of scalable software systems because managing a large system using software is more sustainable than manually managing hundreds of machines.

網站可靠性工程（SRE）是使用軟件工具自動化 IT 基礎架構任務（例如系統管理和應用程序監控）的實踐。組織使用 SRE 確保其軟體應用程式在開發團隊的頻繁更新中保持可靠性。SRE 特別提高了可擴展軟件系統的可靠性，因為使用軟件管理大型系統比手動管理數百台機器更具可持續性。

=> + Resilience, + Observability

5. 軟體開發 (Software development) PM, SA, SD, QA -> Coding, Developer, Programming

每天下班跟假日都要來一點 HackerRank, LeetCode 練練功.

後端(Back-end), 前端(Front-end), 全端(Full-stack).

Pythonic!

JavaScript, TypeScript, MEAN (MongoDB, Express.js, Angular, Node.js), MERN (MongoDB, Express.js, React, Node.js)

Golang,

6. Globalization (English):

每天下班跟假日都要聽多一點英文, 多說一點英文, 讀多一點英文, 寫多一點英文.

// End

看那看不到的東西，聽那聽不到的聲音，知那不知道的事物，才是真理。

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Thu, 25 May 2023 12:13:00 +0000

看那看不到的東西，聽那聽不到的聲音，知那不知道的事物，才是真理。 --- 達摩祖師

[PagerDuty Certified] Incident Responder Certification

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Fri, 12 May 2023 14:20:00 +0000

2023.05.12(五)

https://www.credly.com/badges/963ffcb6-2b5c-4980-a6de-27f2a1005ebb/linked_in?t=ruju53

〈開經偈〉

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sat, 22 Apr 2023 07:31:00 +0000

無上甚深微妙法，

百千萬劫難遭遇；

我今見聞得受持，

願解如來真實義。

docker 之獨孤九劍

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Sun, 08 Jan 2023 12:26:00 +0000

...

... ... ...

docker 之獨孤九劍

... ... ...

1. install Docker Desktop:

refer to: https://docs.docker.com/desktop/

$ docker info
$ docker run hello-world

2. Docker Images to Containers

// List images

// Usage: docker images [OPTIONS] [REPOSITORY[:TAG]]

$ docker images

// docker run: Run a command in a new container

// Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

// docker run -ti: terminal interactive (可互動模式)

$ docker run -ti ubuntu:latest bash

// List containers

// Usage: docker ps [OPTIONS]

$ docker ps

// List containers -all

$ docker ps -a

// List containers -latest

// Show the latest created container (includes all states): 列出最後 created 的 container, 通常用於看不正常關閉的 container

$ docker ps -l

3. Docker Containers to Images (docker commit)

$ docker run -ti ubuntu:latest bash

# touch AaA_IMAGE_V2

$ docker ps -l

$ docker images

// docker commit: Create a new image from a container's changes

// Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]

$ docker commit 3597f6ac186f ubuntu-test:2.0

等同於

// docker tag: Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE

// Usage: docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

$ docker tag 0eb2c4ef97cd05e22d316195efdeb908289b0bf1aa8adf157da4955c00e8e505 ubuntu-test:2.0

// Verify

$ docker run -ti ubuntu-test:2.0 bash

4. Docker run

// docker run --rm : Automatically remove the container when it exits (若 exit; 自動移除 container)

$ docker run --rm -ti ubuntu-test:2.0 sleep 5

$ docker run -ti ubuntu bash -c "sleep 3; echo all done"

// docker run -d: --detach Run container in background and print container ID

// [AaA]: 就是類似 nohup 的概念, 在背景執行.

$ docker run -d -ti ubuntu bash

$ docker ps

// 從 detach 恢復到 attach mode

$ docker attach lucid_rosalind

// [AaA]:密技亦可以在 terminal 按 Ctrl+p Ctrl+q 達到 detach 的境界

5. Docker exec

// docker exec: Run a command in a running container; 通常用於 debug & DBA administration

// Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

$ docker exec -ti lucid_rosalind bash

// or

$ docker exec -ti lucid_rosalind cat test.txt

6. Docker logs

// docker logs: Fetch the logs of a container

// Usage: docker logs [OPTIONS] CONTAINER

// 範例把 cat 打錯成 catt

$ docker run --name example -d ubuntu bash -c "catt /etc/passwd"

$ docker logs example

bash: line 1: catt: command not found

7. Stopping and Removing Containers

$ docker run -ti ubuntu bash

// docker kill: Kill one or more running containers

// Usage: docker kill [OPTIONS] CONTAINER [CONTAINER...]

$ docker ps

$ docker kill cranky_lamarr

// docker rm: Remove one or more containers (對正在 running 的 container 無效, 必須先 kill 再 rm)

// Usage: docker rm [OPTIONS] CONTAINER [CONTAINER...]

$ docker rm cranky_lamarr

// 移除 images 的指令:

// docker rmi: Remove one or more images

// Usage: docker rmi [OPTIONS] IMAGE [IMAGE...]

8. Exposing ports: docker port

// docker run -p outside-port:inside-port/protocol (tcp/udp)

// docker port: List port mappings or a specific mapping for the container

// Usage: docker port CONTAINER [PRIVATE_PORT[/PROTO]]

$ docker run --rm -ti -p 12345:12345 -p 12346:12346 --name echo-server ubuntu:14.04 bash

$ docker port echo-server

12345/tcp -> 0.0.0.0:12345

12346/tcp -> 0.0.0.0:12346

在第一視窗 listen port 12345 & 12346

# nc -lp 12345 | nc -lp 12346

在第二視窗

$ docker run --rm -ti ubuntu:14.04 bash

# nc host.docker.internal 12345

在第三視窗

$ docker run --rm -ti ubuntu:14.04 bash

# nc host.docker.internal 12346

// [AaA]: 若前面不指定 outside-port, 則會隨機作 port mapping dynamically

// UDP example

$ docker run --rm -ti -p 23456:23456/udp --name echo-server ubuntu:14.04 bash

在第一視窗

# nc -ulp 23456

在第二視窗

$ docker ps

$ docker port echo-server

$ docker run --rm -ti ubuntu:14.04 bash

# nc -u host.docker.internal 23456

9. 無招勝有招 docker --help

// End.

[神曲] 當我娶過她

noreply@blogger.com (☆ 劉建春(AaA‧燕俠) ☆) — Tue, 15 Nov 2022 12:51:00 +0000

當我娶過她

資工遊俠劉建春(AaA / Amzshar / 燕俠 / JCLIUL)之IT人柱力(仙人模式)

Warren Edward Buffett: If you don't find a way to make money while you sleep, you will work until you die.

[Python] 6/49 Big Lottery 大樂透 程式, 過了今晚!

[Python] 字典 dict { } 的 key, value 鍵、值 互換

[Python] 傳回 ASCII 的 chr() 函數 vs 傳回字元的 Unicode 碼值 ord() 函數

[Python] name_list.reverse() and name_list[::-1]

Free ChatGP 3.5 for (TOEIC) English Speaking Practice / 免費 ChatGP 3.5 練習(多益)英語口說

[Python] Remove elements from a list

[Python] Concatenate Lists / Merge Lists in Python

[Python][Regular Expressions][正規表示式] Python’s Regex Symbols

[Python] Python’s basic data types

[Python] Python String format 字串格式化 : (1) 舊式字串格式化 %-formatting (2) 新式字串格式化 str.format() (3) 字串插值 f-string (Formatted String Literal) (4) Template Strings

(1) 舊式字串格式化 %-formatting:

(2) 新式字串格式化 str.format()

(3) 字串插值 f-string (Formatted String Literal)

(4) Template Strings:

同場加映 : Python String 字串 join() 語法

Angular 超級入門教學 000

IT 數位轉型 (IT Digital Transformation)

看那看不到的東西，聽那聽不到的聲音，知那不知道的事物，才是真理。

[PagerDuty Certified] Incident Responder Certification

〈開經偈〉

docker 之獨孤九劍

docker 之獨孤九劍

1. install Docker Desktop:

2. Docker Images to Containers

3. Docker Containers to Images (docker commit)

4. Docker run

5. Docker exec

6. Docker logs

7. Stopping and Removing Containers

8. Exposing ports: docker port

9. 無招勝有招 docker --help

[神曲] 當我娶過她

[Python] 6/49 Big Lottery 大樂透程式, 過了今晚!

[Python] 字典 dict { } 的 key, value 鍵、值互換