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Week1-7-Python More on Strings
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      [1] Week1-1-Introduct...
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      Week1-1-Introduction
      [2] Week1-2-About the...
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      01:25
      Week1-2-About the Professor
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      Week1-3-Data Science
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      Week1-8-Python Demonstration
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      [13] Week2-1-Introduct...
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      02:55
      Week2-1-Introduction
      [14] Week2-2-The Serie...
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      04:47
      Week2-2-The Series Data Structure
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      [20] Week2-8-Missing V...
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      04:54
      Week2-8-Missing Values
      [21] Week3-1-Merging D...
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      07:42
      Week3-1-Merging Dataframes
      [22] Week3-2-Pandas Id...
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      06:33
      Week3-2-Pandas Idioms
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      [24] Week3-4-Scales
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      02:25
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      [26] Week3-6-Date Func...
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      05:08
      Week3-6-Date Functionality
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      01:13
      Week4-1-Introduction
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      04:13
      Week4-2-Distributions
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      Week4-3-More Distributions
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      Week4-4-Hypothesis Testing in Python（上）
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